inch-pound - boatzincs.com specification.pdfmil-dtl-18001l 3 code of federal regulations (cfr) 29...

Comments, suggestions, or questions on this document should be addressed to: Commander, Naval Sea Systems

Command, ATTN: SEA 05S, 1333 Isaac Hull Avenue, SE, Stop 5160, Washington Navy Yard DC 20376-5160 or

emailed to [email protected], with the subject line “Document Comment”. Since contact information

can change, you may want to verify the currency of this address information using the ASSIST Online database at

https://assist.dla.mil.

AMSC N/A FSC 5342

INCH-POUND

MIL-DTL-18001L

3 December 2013

SUPERSEDING

MIL-A-18001K

w/INT. AMENDMENT 3

24 October 2007

MIL-A-18001K

16 December 1991

DETAIL SPECIFICATION

ANODES, SACRIFICIAL ZINC ALLOY

This specification is approved for use by all Departments and Agencies of the Department of Defense.

1. SCOPE

1.1 Scope. This specification covers the requirements for zinc anodes (galvanic protectors) in the form of

plates, slabs, discs, and rods for corrosion protection (cathodic protection) of metals and alloys. It also includes

features of anode design and fabrication, such as cast-in cores for mounting purposes. The material described by

this specification contains elements for which the Occupational Safety and Health Administration (OSHA) has set

standards for exposure limits. Handling, storage, and application of this material should be in accordance with the

29 CFR 1910 and 1915 and any other safety and health regulations (local or otherwise) which may apply.

1.2 Classification. The anodes are of the following classes, types, and styles, as specified (see 6.2).

1.2.1 Class 1 – cast-in cores.

Type ZHS – Zinc, hull slab (steel straps) (23- and 42-pound sizes).

Type ZHB – Zinc, hull slab (brass straps) (23-pound size).

Type ZHC – Zinc, hull slab (core straps) (23- and 42-pound sizes).

Type ZSS – Zinc, submarine slab (steel strap) (12- and 24-pound sizes).

Type ZTS – Zinc, teardrop shape (steel strap) (5-pound size).

Type ZEP – Zinc, fairwater slab (pipe core or pipe bushing core).

Style A – Square slab (9-pound size).

Style B – Circular slab (various sizes).

Style C – Semi-circular slab (23-pound size).

Type ZBP – Zinc, bar (pipe core) (8-pound size).

Type ZBS – Zinc, bar (steel straps) (8.5-pound size).

Type ZDM – Zinc, segmented disc (machine-formed interlocking core).

Type ZMP – Zinc, mooring chain (pipe core or pipe bushing core) (various sizes).

Source: https://assist.dla.mil -- Downloaded: 2014-12-30T13:28ZCheck the source to verify that this is the current version before use.

MIL-DTL-18001L

2

1.2.2 Class 2 – plain, no cores.

Type ZRN – Zinc, rod, no core, extruded, drawn or rolled.

Type ZPN – Zinc, plate, no core, rolled.

1.3 Key to symbols. The letter designations for the types of anodes are shown in table I.

TABLE I. Letter designations of anode types.

First letter (designates

anode metal)

Second letter (designates shape or

general use) Third letter (designates core)

Z - (zinc) H - (hull slab) B - (brass straps)

S - (submarine slab) S - (steel strap)

T - (teardrop shape) C - (core strap)

E - (fairwater slab) P - (pipe core)

R - (rod, cylindrical) M - (machine-formed interlocking core)

P - (plate) N - (no core)

B - (bar, square)

D - (disc, segmented)

M - (mooring chain)

2. APPLICABLE DOCUMENTS

2.1 General. The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This

section does not include documents cited in other sections of this specification or recommended for additional

information or as examples. While every effort has been made to ensure the completeness of this list, document

users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this

specification, whether or not they are listed.

2.2 Government documents.

2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a

part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are

those cited in the solicitation or contract.

FEDERAL SPECIFICATIONS

QQ-B-639 - Brass, Naval: Flat Products (Plate, Bar, Sheet, and Strip)

FEDERAL STANDARDS

FED-STD-H28 - Screw-Thread Standards for Federal Services

FED-STD-H28/7 - Screw-Thread Standards for Federal Services Section 7 Pipe Threads,

General Purpose

(Copies of these documents are available online at http://quicksearch.dla.mil/ or https://assist.dla.mil.)

2.2.2 Other Government documents, drawings, and publications. The following other Government documents,

drawings, and publications form a part of this document to the extent specified herein. Unless otherwise specified,

the issues of these documents are those cited in the solicitation or contract.


http://quicksearch.dla.mil/

https://assist.dla.mil/

MIL-DTL-18001L

3

CODE OF FEDERAL REGULATIONS (CFR)

29 CFR 1910 - Occupational Safety and Health Standards

29 CFR 1915 - Occupational Safety and Health Standards for Shipyard Employment

(Copies of these documents are available from the Superintendent of Documents, U.S. Government Printing Office,

Washington DC 20401 or online at www.gpoaccess.gov/index.html.)

2.3 Non-Government publications. The following documents form a part of this document to the extent

specified herein. Unless otherwise specified, the issues of these documents are those cited in the solicitation or

contract.

ASTM INTERNATIONAL

ASTM A36/A36M - Standard Specification for Carbon Structural Steel

ASTM A53/A53M - Standard Specification for Pipe, Steel, Black and Hot Dipped, Zinc

Coated, Welded and Seamless

ASTM A513/A513M - Standard Specification for Electric Resistance Welded Carbon and Alloy

Steel Mechanical Tubing

ASTM A524 - Standard Specification for Seamless Carbon Steel Pipe for Atmospheric

and Lower Temperatures

ASTM B139/B139 - Standard Specification for Phosphor Bronze Rod, Bar, and Shapes

ASTM E290 - Standard Test Method for Bend Testing of Material for Ductility

ASTM E536 - Standard Test Methods for Chemical Analysis of Zinc and Zinc Alloys

(Copies of these documents are available from ASTM International, 100 Barr Harbor Dr., P.O. Box C700, West

Conshohocken, PA 19428-2959 or online at www.astm.org.)

EUROPEAN COMMITTEE FOR STANDARDIZATION

BS EN 10025-1 - Hot Rolled Products of Structural Steel. General Technical Delivery Conditions

BS EN 10305-1 - Steel Tubes for Precision Applications

(Copies of these documents are available online from BSI at http://shop.bsigroup.com/.)

INTERNATIONAL ORGANIZATION FOR STANDARDIZATION (ISO)

ISO 2768-1 - General Tolerances – Part 1: Tolerances for Linear and Angular Dimensions

without Individual Tolerance indications

(Copies of this document are available from International Organization for Standardization (ISO), 1, ch. de la Voie-

Creuse, Case postale 56 CH-1211 Geneva 20, Switzerland or online at www.iso.org.)

2.4 Order of precedence. Unless otherwise noted herein or in the contract, in the event of a conflict between

the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this

document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3. REQUIREMENTS

3.1 Materials.

3.1.1 Zinc. The anodes shall conform to the composition specified in table II as determined by the methods

specified herein (see 4.3.3). Total of elemental constituents not specified in table II shall not exceed 0.10 percent.


http://www.astm.org/

http://shop.bsigroup.com/

http://www.iso.org/

MIL-DTL-18001L

4

TABLE II. Chemical composition, zinc anodes.

Element Weight (percent)

Lead <0.006

Iron <0.005

Cadmium 0.025 – 0.07

Copper <0.005

Aluminum 0.1 – 0.5

Zinc >99.414

3.1.2 Steel straps and pipe. Type ZHS, ZHC, ZSS, ZBS, and ZTS anodes shall have steel strap cores

conforming to ASTM A36/A36M or BS EN 10025-1. Type ZEP and ZBP anodes shall have steel pipe cores

conforming to ASTM A524 or BS EN 10305-1. Type ZMP anodes shall have steel pipe cores conforming to

ASTM A524 and ASTM A513/A513M. Hot dip or electrodeposition methods may be used. Either coating shall be

adherent and free from flaking. The coating shall adhere tenaciously to the surface of the base metal (see 4.3.3.5).

3.1.3 Brass straps. Type ZHB zinc anodes shall have brass strap cores conforming to Alloy 482 of QQ-B-639

or phosphor bronze straps conforming to Composition A of ASTM B139/B139M. The brass or bronze straps shall

be coated with zinc to a minimum thickness of 0.0005 inch (0.0127 millimeter) (see 4.3.3.5). The maximum copper

content in the zinc, as specified in table II, may be increased to 0.020 percent for Type ZHB anodes.

3.1.4 Steel machine-formed interlocking cores. Type ZDM zinc anodes shall have machine-formed

interlocking cores conforming to commercial grade mild or leaded steel. The cores shall be flash coated with zinc,

tin, or aluminum prior to assembly within the zinc anodes.

3.1.5 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally

preferable materials should be used to the maximum extent possible, provided that the material meets or exceeds the

operational and maintenance requirements, and promotes economically advantageous life cycle costs.

3.1.6 OSHA standards. The material described by this specification contains elements for which the

Occupational Safety and Health Administration (OSHA) has set standards for exposure limits. Handling, storage,

and application of this material should be in accordance with the most recent 29 CFR 1910 and 1915 and any other

safety and health regulations (local or otherwise) which may apply.


MIL-DTL-18001L

5

3.2 Manufacture.

3.2.1 Type ZHS, ZHB, and ZHC, hull slab anodes (see figures 1, 2, and 7 through 10), types ZSS, submarine

slab anode, type ZBS, zinc bar steel strap anode, and ZTS, teardrop anodes (see figures 4 through 7 and figure 22).

Type ZHS, ZHB, ZHC, ZSS, ZBS, and ZTS anodes shall be manufactured by any casting process provided the

anodes meet the other requirements covered by this specification. Open or closed molds may be used. Cores and

straps shall be positioned so that they are embedded ¼ inch -1⁄16 inch or +⅛ inch (6.35 millimeters -1.58 millimeters

or +3.175 millimeters) as shown on figures 1 through 11 which may be measured from either surface of anode as

applicable, except figure 5, which shall be embedded 3⁄8 inch -

1⁄16 inch or +⅛ inch (9.525 millimeters -1.58 millimeters

or +3.175 millimeters) and figure 22, which shall be embedded .86 inch ±⅛ inch (21.8 millimeters ±3.3

millimeters). A metallurgical bond shall be obtained between the zinc and the strap when tested as specified in

4.3.1.3 or 4.3.1.4. Type ZHC anodes, designated as shown on figures 9 and 11, are intended for use with rubber

washers for submarine application. Countersinks for rubber washers shall be cast or machined. Anode shall be

manufactured so that the countersink is centered on the core hole. Type ZSS anodes, designated as shown on figures

4 through 6, and type ZBS anode as shown on figure 22, may be mounted by welding or by fasteners. Those

intended to be attached by fasteners shall indicate the requirements for mounting holes in the strap. The mounting

hole shall be counterbored on the structure side of the strap.

3.2.2 Type ZEP, fairwater slab anode, and type ZMP, mooring chain anode (see figures 12 through 20 and

figure 28). The pipe core inserts shall conform to 3.1.2. A sound metallurgical bond shall be obtained between the

core and anode material for at least 30 percent of the total surface of the core in contact with the anode when tested

as specified in 4.3.1.3 or 4.3.1.4. The position of the pipe core insert shall not vary more than ±⅛ inch

(3.175 millimeters) from center as shown on figures 12 through 20 and figure 28.

3.2.3 Type ZBP, zinc bar anode (see figure 21) and type ZBS, zinc bar steel strap anode. The position of the

pipe core and steel strap insert specified in 3.1.2 shall not vary more than ±¼ inch (6.35 millimeters) from the center

as shown on figure 21 and figure 22. The metallurgical bonding requirements between anode and core specified in

4.3.1 shall apply.

3.2.4 Types ZPN and ZRN anodes (no core) (see figure 23). Type ZPN and ZRN anodes (no core) shall be

manufactured by any process provided the anodes pass the tests demonstrating mechanical properties (see 3.6) and

other requirements covered by this specification.

3.2.5 Type ZDM, zinc segmented disc, machine-formed interlocking core anode (see figures 24 through 27).

Metallic bonding or an interference fit of the core into the anode shall be required so that an axial force applied from

the stud end to remove the core insert is a minimum of 750 pounds (340 kilograms).

3.2.5.1 Core insert. The machine-formed core insert specified in 3.1.4 shall be manufactured in accordance

with details and tolerances shown in FED-STD-H28 and FED-STD-H28/7. This core insert has been designed for

mass production by modern machine methods. The insert consists of an integral piece having a threaded male stud

at one end and a tapped hole at the other end. Provision has been made to achieve self-locking characteristics to

interlocking threaded assemblies of multiple segmented anode discs by interference fit of bottom male threads into a

taper tapped hole. These anodes shall screw together very snugly by hand tightening or by using simple hand tools,

such as pliers or pipe wrenches.

3.3 Dimensions. Anode dimensions shall be as specified on figures 1 through 30 (see 4.2.2).

3.3.1 Types ZHS, ZHB, ZHC, ZTS, ZSS, ZBS, ZEP, ZBP, ZDM, ZRN, and ZMP anodes. The specified

anodes shall conform to the dimensions shown on figures 1 to 28, inclusive. Dimensions are in inches unless

otherwise indicated on the figure.

3.3.2 Type ZPN anodes. Type ZPN anodes shall be 48 inches (1219.2 millimeters) in length by 24 inches

(609.6 millimeters) in width. Thickness of Type ZPN anode shall be either 0.5 or 1 inch (12.7 or 25.4 millimeters),

as specified (see 6.2).

3.3.3 Weight. Minimum weight requirements are specified on figures 1 through 30. The total weight of the

specified type of anode received divided by the total number of anodes of that type shall be equal to or greater than

the minimum weight of anode type specified (see 4.2.2).


MIL-DTL-18001L

6

3.4 Permissible variation in dimensions.

3.4.1 Length and width of types ZHC, ZHB, ZHS, ZTS, ZPN, ZSS, ZBS, and ZBP anodes. The width and

length of the zinc alloy on Types ZHC, ZHB, ZHS, ZTS, ZPN, ZSS, ZBS, and ZBP anodes shall not vary more than

±⅛ inch (3.75 millimeters), measured at the widest surface of the tapered (for mold release) anode.

3.4.2 Length of type ZRN anodes. A variation of ±0.25 inch (6.35 millimeters) will be permitted based on

nominal lengths of 3 and 6 feet (0.91 and 1.83 meters).

3.4.3 Diameter of types ZEP, ZDM, and ZRN anodes. The diameter or width, whichever is the larger, of Type

ZEP anode shall not vary from the specified dimension by more than ±⅛ inch (3.175 millimeters). The diameter of

the Type ZDM anode shall not vary more than +0.025 or -0.005 inch (+0.635 or -0.127 millimeter) from the

specified diameter. The diameter of the Type ZRN anode shall not vary more than ±1⁄32 inch (0.79 millimeter) from

the specified diameter.

3.4.4 Thickness. The thickness of Types ZHS, ZHB, ZHC, ZTS, ZPN, ZSS, ZBS, ZEP, and ZBP zinc anodes

shall not vary more than ±⅛ inch (3.175 millimeters). Except for Type ZEP anodes, thickness measurements shall

be taken at random 1 inch (25.4 millimeters) from any edge of the anode by means of a suitable caliper, avoiding

any surface irregularities which would interfere with a representative measurement. Type ZEP anode thickness

measurements shall be taken at random, a distance from the edge of approximately one-half the radius of the anode.

The thickness of Type ZDM anode shall not vary more than ±1⁄64 inch (0.397 millimeter).

3.4.5 Eccentricity of core in type ZDM anode. The cores of Type ZDM anode shall be positioned axially and

concentrically in the zinc disc. Eccentricity greater than 0.005 inch (0.127 millimeter) shall not be permitted.

3.4.6 Stud hole elongation for type ZSS and ZBS anodes. When specified (see 6.2), Type ZSS and ZBS straps

may be modified as shown on figure 6.

3.5 Marking of anodes.

3.5.1 Marking. The zinc anodes, Types ZHS, ZHB, ZHC, ZSS, ZBS, ZBP, ZMP, ZTS, ZEP, and ZPN shall

have the anode type and the words “DO NOT PAINT” die-stamped or cast on the exposed face of the anodes (see

figures 1 through 22 and 28 through 30). No marking shall be required for Types ZDM, and ZRN zinc anodes. For

Type ZMP, the nominal anode size shall be marked as specified on figure 28.

3.5.1.1 Type ZHB anode markings. One end of each cast-strap of each Type ZHB anode shall be painted red

so that the installing activity can distinguish it from Type ZHS anodes. One coat of red paint shall be applied

between the joggled bevel of the strap and zinc anode. The coating shall be approximately ½ inch (12.7 millimeters)

wide and shall extend across one side of each strap so as to be readily visible when the anode is installed. The foot

of the strap shall not be painted.

3.5.2 Heat identification. Each anode shall be cast or die-stamped with the following: manufacturer’s symbol,

unique non-recurring heat number specific to production lot (see 4.2.1), and the capital letter corresponding to the

revision letter of the military specification to which the anode conforms. (For this specification issue, the letter “L”

should be used.)

3.6 Mechanical properties.

3.6.1 Fracture or cracking. When tested in accordance with 4.3.3.3, Type ZRN rods and Type ZPN plates shall

not fracture or show signs of cracking.

3.6.2 Torsional shear strength. When tested in accordance with 4.3.3.4, Type ZRN anodes shall have a

minimum torsional shear strength of 12,000 pounds per square inch (lb/in2) [8,437,000 kilograms per square meter

(kg/m2)].


MIL-DTL-18001L

7

3.7 Workmanship.

3.7.1 Zinc. The zinc anodes shall be free of flash burrs, cracks, blow holes, pipes, and surface slag consistent

with good commercial practice (see 4.2.2). The cast anodes shall be free of shrinkage cavities exceeding ¼ inch

(6.35 millimeters) in depth, except that anodes 2 inches (50.8 millimeters) thick or more shall be free of shrinkage

cavities exceeding 3⁄8 inch (9.53 millimeters) in depth, when measured from a straight edge placed diagonally across

the opposite edges of the anode. For Type ZPN anodes, the shrinkage cavities shall be measured over a 12- by

12-inch (304.8- by 304.8-millimeter) area. In addition to the above allowable shrinkage cavities, surface

irregularities of the anode exceeding ⅛ inch (3.18 millimeters) in depth shall not be permitted on one face of slab or

disc type anodes unless at least ⅛ inch (3.18 millimeters) of sound metal covers the entire strap of core area. Types

ZDM, and ZRN anodes shall be smooth on their curved surfaces.

3.7.2 Metal cores. Metal cores extensions from the anodes shall be smooth and free of sharp burrs. The cast-in

cores shall have metallurgical bonds specified herein free of air pockets and inclusions consistent with good

commercial practice.

4. VERIFICATION

4.1 Conformance inspection. Conformance inspection shall include the examinations of 4.2 and the tests of

4.3.

4.1.1 Lot. For the purpose of sampling, a lot shall consist of all zinc anodes of the same class and type, poured

or cast from one homogeneous heat or melt of a single charge or raw materials. The addition of any material to the

heat or melt at any time constitutes a new lot.

4.2 Visual and dimensional examination. Each anode selected in accordance with 4.2.1 shall be examined for

conformance to requirements of 3.3 through 3.7. If any anodes do not conform to 3.3 through 3.7, it shall be cause

for rejection of the entire lot.

4.2.1 Sampling for visual and dimensional examination. As a minimum, a sample quantity of anodes shall be

selected from each lot in accordance with table III. If one or more defects are found in any sample, the entire lot

shall be rejected. The contractor has the option of screening 100 percent of the rejected lot for the defective

characteristic(s) or providing a new lot which shall be inspected in accordance with the sampling plan provided

herein.

4.2.2 Examination procedure. Anodes selected in accordance with 4.2.1 shall be measured for weight and

dimension, and be visually inspected at 10 times the magnification for workmanship. No cracks with a surface

length greater than ⅛ inch (3.175 millimeters) shall be allowed. The entire lot of each type anode shall meet the

weight requirements as specified in 3.3.3. If the weight is less than the minimum weight for the type of anode

specified, it shall be cause for rejection of the entire lot.


MIL-DTL-18001L

8

TABLE III. Sampling for visual and dimensional examination.

Lot size Sample size Accept Reject

2 – 25 3 0 1

26 – 50 5 0 1

51 – 90 6 0 1

91 – 150 7 0 1

151 – 280 10 0 1

281 – 500 11 0 1

501 – 1200 15 0 1

1201 – 3200 18 0 1

3201 – 10,000 22 0 1

10,000 and over 29 0 1

4.3 Tests. The following tests shall be performed.

4.3.1 Core bonding test. One of the following core bonding tests (4.3.1.3 or 4.3.1.4) shall be performed on

each anode selected in accordance with 4.3.1.1.

4.3.1.1 Sampling for core bond tests. From each lot specified in 4.1.1, two anodes shall be selected at random

of Types ZHS, ZHB, ZHC, ZSS, ZBS, ZTS, ZEP, ZMP, and ZBP and five anode discs of Type ZDM for the test

specified.

4.3.1.2 Resampling. In cases where one of the two anodes tested failed to pass the core bond test, four

additional anodes may be selected for retest at the direction of the manufacturer.

4.3.1.3 Core bonding test procedure. Each anode selected to represent the lot shall be cut along the axis of each

strap or core, and the cut surface shall be ground reasonably smooth. These surfaces shall be polished with a

240-mesh emery abrasive until the zinc-strap interface is distinctly visible. At least 30 percent of this interface shall

show no separation when examined at approximately 10 times the magnification. Zinc anodes may have a bead or

buttress projecting from the anode edge along the strap not exceeding ¼ inch (6.35 millimeters). Less bond between

core and zinc than specified herein shall be cause for rejection of the lot.

4.3.1.4 Alternate core bonding test. Using any suitable method, the cores shall be torn from each anode

selected to represent the lot. The use of a sledge hammer to break the zinc away from the cores has been found to be

satisfactory. The area showing bond shall be established by visual inspection of the portion of the cores which were

contained within the anode. The metallurgical bond between the zinc and the core shall be at least 30 percent of the

total surface area of each core in contact with the zinc of the anode. For the purpose of determining the surface area

of the encased core in the anode, marks shall be scribed on the strap around the periphery of each anode at locations

where the straps protrude from the anode. The total area of the strap shall be computed between the scribe marks.

The surfaces shall have a smooth grey matte finish where bonding has been adequate and either a shiny metallic or

rough, dark, or discolored finish where bonding has been inadequate. Both core and zinc mating surfaces shall be

examined. Less bond between core and zinc than that specified herein shall be cause for rejection of the entire lot.

4.3.1.5 Type ZDM anode. A minimum steady pressure of 750 pounds (340 kilograms) from a hand-operated

pen press applied axially shall be required to remove the core from the anode.

4.3.1.6 Sample anodes. Sample anodes shall be discarded and not included in the delivery of material after the

core bond tests are performed. The remaining lengths of ZRN and ZPN anodes may be included in the delivery of

material after the physical tests of 4.3.3. Sampling for chemical analysis, as specified in 4.3.2.1, shall be made prior

to discarding the anodes specified in 4.3.1.3 through 4.3.1.5.


MIL-DTL-18001L

9

4.3.2 Chemical analysis. The chips selected in accordance with 4.3.2.1 shall be analyzed to determine

conformance with 3.1.1. A strong magnet shall be used to remove any iron contamination picked up during the

preparation of the chips. The chips shall be washed in an iron-free degreasing solvent prior to analysis. If any

sample does not conform to the chemical composition specified in table II, it shall be cause for rejection of the lot

represented by the sample.

4.3.2.1 Sampling for chemical analysis. Anodes shall be taken from each homogenous lot to verify compliance

with the chemical requirements of 3.1.1 and table II. As a minimum, the first, middle, and last poured anode shall

be tested to verify compliance with the chemical requirements of 3.1.1 and table II. The drilling for sampling for

chemical analysis shall be made with a special nonferrous drill bit. See 4.3.2.7, 6.5.1, and 6.5.2 for sample

preparation and drilling procedure. From each of the required anodes, one 2-ounce sample shall be taken by drilling

or machining the material at the locations specified in 4.3.2.2 to 4.3.2.7, inclusive. The drill or tool bit shall not

penetrate into the core material of the cored type anodes. The drilled or machined anodes may be included in the

delivery of the material, except Type ZDM which shall be discarded.

4.3.2.2 Drilling locations. Type ZHS and ZHB anodes shall be drilled or machined at locations about

2 to 5 inches (50.8 to 127 millimeters) from the short edge as appropriate to keep away from the encased core.

4.3.2.3 Drilling precautions. Type ZSS, ZBS, ZHC, and ZTS anodes shall be drilled or machined at points not

greater than ½ inch (12.7 millimeters) from the long edge.

4.3.2.4 Drilling points for types ZEP, ZMP, and ZBP. Type ZEP, ZMP, and ZBP anodes shall be drilled at

points midway between the outer edge of the core and the edge of the anode.

4.3.2.5 Type ZDM samples. Type ZDM anodes shall have a sufficient number of discs machined or drilled to

make two 4-ounce quantities. Type ZDM anodes shall be machined or drilled at the outer surface to a depth not

exceeding ¼ inch (6.35 millimeters).

4.3.2.6 Surface chips. One 2-ounce sample for each anode specified in 4.3.2.1 shall be taken at the surface in

contact with mold wall by drilling or machining to a maximum depth of ¼ inch (6.35 millimeters). The sample for

Types ZPN and ZRN shall be taken by drilling completely through both larger surfaces or through the diameter of

the anode, as applicable. The samples shall be collected in individual clean containers, and properly labeled as to

lot, melt, and sample numbers. Sample chips may be taken from anodes which have passed the applicable bond test.

Samples shall be clean and free from dirt, oil, grit, and foreign matter. The samples shall be sent to a laboratory

acceptable to the contracting agency. A method for sampling anodes for chemical analysis is specified in 6.5.

4.3.2.7 Determination of aluminum, cadmium, copper, iron, and lead. The aluminum, cadmium, copper, iron,

and lead content of zinc shall be determined in accordance with the appropriate methods in ASTM E536 using the

atomic absorption, inductively coupled plasma, or directly coupled plasma spectrophotometers.

4.3.2.8 Spectrochemical analysis. Spectrochemical analysis shall be in accordance with any standard method

approved by a standard issue body, such as the American National Standards Institute or ASTM E536, and accepted

by the Government.

4.3.3 Physical tests.

4.3.3.1 Sampling for physical testing. At least five Type ZRN and five Type ZPN anodes shall be selected at

random from a lot. Type ZRN anodes shall conform to the tests specified in 4.3.3.3 and 4.3.3.4. Type ZPN anodes

shall conform to the test specified in 4.3.3.3.

4.3.3.2 Physical test sample dimensions for ZPN type anodes. Type ZPN test samples shall be cut from the

plate anodes and shall be of the following dimensions:

a. Width: Twice the thickness of the anode.

b. Length: 12 inches (304.8 millimeters) (or to suit test apparatus).


MIL-DTL-18001L

10

4.3.3.3 Bend test. Type ZRN anodes, selected in accordance with 4.3.3.1, shall be bent 45 degrees around a

mandrel that has a diameter of three times the thickness of the Type ZPN anode. Type ZPN anodes, selected in

accordance with 4.3.3.2, shall be bent 45 degrees around a mandrel of three times the diameter of Type ZPN anodes.

The anodes shall be bent in accordance with procedures specified in ASTM E290. After bending, the convex

surface of the specimens shall be inspected for cracking by visual examination. Any evidence of cracking shall

represent failure of the test and shall be cause for rejection of the entire lot.

4.3.3.4 Torsional shear test. Type ZRN anodes, selected in accordance with 4.3.3.1, shall be subjected to

torsional shear at a rate of 10 to 12 revolutions per hour using a Tinius-Olson torsional shear apparatus, or equal.

Failure of the anode to withstand a torsional shear of 12,000 lb/in2 (8,437,000 kg/m

2) shall be cause for rejection of

the lot.

4.3.3.5 Steel strap/pipe core coating test. When the coating is cut or pried into, such as with a stout knife

applied with considerable pressure in a manner tending to remove a portion of the coating, it shall only be possible

to remove small particles of the coating by paring or whittling, and it shall not be possible to peel any portion of the

coating so as to expose the steel. Lack of adhesion of the zinc coating at bend or absence of zinc coating at cut

edges shall not be cause for rejection of fabricated anodes. Cracks in the base metal shall be cause for rejection.

5. PACKAGING

5.1 Packaging. For acquisition purposes, the packaging requirements shall be as specified in the contract or

order (see 6.2). When packaging of materiel is to be performed by DoD or in-house contractor personnel, these

personnel need to contact the responsible packaging activity to ascertain packaging requirements. Packaging

requirements are maintained by the Inventory Control Point’s packaging activities within the Military Service or

Defense Agency, or within the military service’s system commands. Packaging data retrieval is available from the

managing Military Department’s or Defense Agency’s automated packaging files, CD-ROM products, or by

contacting the responsible packaging activity.

6. NOTES

(This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.)

6.1 Intended use. The anodes are primarily intended for use in corrosion prevention in seawater of surface ship

and submarine hulls, steel and aluminum equipment and structures, sea chests, sonar domes, mooring chains, and the

seawater side of condensers and other heat exchangers. The anodes may also be used for corrosion prevention of

pipe lines and other installations underground. The use of a particular anode is determined by the nature and

geometry of the structure to be protected. Refer to applicable installation instructions for types, amounts, locations,

and mounting of anodes.

6.2 Acquisition requirements. Acquisition documents should specify the following:

a. Title, number, and date of this specification.

b. Class and type (see 1.2).

c. As required, the specific issue of individual documents referenced (see 2.2.1, 2.2.2, and 2.3).

d. Style of Type ZEP, diameter of Type ZEP (Style B), pipe core size (3⁄8 inch or ½ inch); size of Type ZMP

(see figure 27); diameter of Type ZDM (see figures 23 to 26); diameter of Type ZRN required (see figure 23); Type

ZHC, ship or submarine usage with neoprene washers (see figures 7 to 10).

e. Thickness of Type ZPN anode, whether ½ or 1 inch (see 3.3.2).

f. Elongation of Type ZSS and ZBS anode straps (see 3.4.6).

g. Packaging requirements (see 5.1).

h. Total number of anodes required (see 6.3).

6.3 Ordering by quantity. The order for anodes should specify the exact number of anodes required (see 6.2).

See table IV for National Stock Numbers (NSN) for each anode type.


MIL-DTL-18001L

11

TABLE IV. National stock numbers.

Anode type Size (inches) National stock number

ZHS-23 12 x 6 x 1.25 5342-00-277-7559

ZHS-42 12 x 6 x 2.5 5342-00-134-8131

ZHB-23 12 x 6 x 1.25 5342-00-662-9827

ZHC-23 12 x 6 x 1.25 5342-00-813-6058

ZHC-42 12 x 6 x 2.5 5342-00-486-0957

ZSS-12 12 x 3.5 x 1.25 5342-00-290-8243

ZSS-12 (ELONGATED STRAP END)

12 x 3.5 x 1.25 5342-01-356-6382

ZSS-24 12 x 3.5 x 2.5 5342-01-357-4579

ZSS-24 (ELONGATED STRAP END)

12 x 3.5 x 2.5 5342-01-356-6383

ZTS-5 9 x 3 x 1.375 5342-01-294-2332

ZEP-A (SQUARE) 6 x 6 x 1 5342-00-543-3032

ZEP-B (CIRCULAR)

11 dia x 1 thk 5342-00-702-1664

9 dia x 1 thk 5342-00-702-1372

6 dia x 1 thk 5342-00-702-1371

5 dia x 1 thk 5342-00-527-2366

4 dia x 1 thk 5342-00-582-2011

3 dia x 1 thk 5342-00-582-2012

2 dia x 1 thk 5342-00-527-2368

ZEP-C (SEMI-CIRCULAR) 7.5 r x 1 thk 5342-00-702-1665

ZBP 7.5 x 2 x 2 5342-00-526-3679

ZDM

1.050 in dia 5342-00-682-2174

0.825 in dia 5342-00-725-3999

0.625 in dia 5342-00-725-3998

0.500 in dia 5342-00-725-3997

ZMP

4 in dia 5342-01-357-4580

3.5 in dia 5342-01-356-6384

3.0 in dia 5342-01-356-8260

2.75 in dia 5342-01-356-6385

2.5 in dia 5342-01-356-6386

2.25 in dia 5342-01-356-6387

2 in dia 5342-01-356-6252

1.75 in dia 5342-01-356-6253

1.25 in dia 5342-01-361-2565


MIL-DTL-18001L

12

TABLE IV. National stock numbers – Continued.

Anode type Size (inches) National stock number

ZRN

1.050 in dia 5342-00-813-6056

0.840 in dia 5342-00-576-1749

0.840 in dia 5342-00-664-0531

0.840 in dia 5342-00-796-4354

0.840 in dia 5342-00-813-6055

0.675 in dia 5342-00-813-6054

0.540 in dia 5342-01-356-6381

0.405 in dia 5342-00-813-6053

ZPN

24 x 48 x 0.5 in 5342-00-290-3793

24 x 48 x 1 in 5342-01-358-4414

6.4 General forms and dimensions. When material is ordered in the form of slabs, bars, discs, or rods, it is to

be understood that these terms refer merely to the general form and dimensions of the material, and do not have any

technical significance as to the methods of manufacture.

6.5 Sampling procedure.

6.5.1 Drilling procedure. The drilling for chemical analysis should be made with a special nonferrous drill in a

clean location (used only for that purpose). The drilling bits should be kept clean of dirt, grit, and other foreign

matter; kept properly sharpened; and used only for sampling purposes. After each use, the drilling bit should be

immersed in a degreasing solvent and wiped dry with a clean rag. The drilling bits, when not in use, should be

stored in an inhibited lubricating oil. The inhibited lubricating oil should be kept in a covered glass container

provided with an air vent. The drilling bits should be wiped dry with a clean rag prior to use. Samples should be

taken with a dry drill. If automatic power drilling equipment is available, a solid tungsten carbide or Tantung twist

drill bit about ½ inch (12.7 millimeters) in diameter is suitable. Where a hand-held power drill is used, the samples

should be taken by drilling with a solid tungsten carbide or Tantung twist drill bit about ¼ inch (6.35 millimeters) in

diameter. A smaller drill bit may be used where the size of the anode does not permit using the specified diameters.

The drills may be used at high speeds and feeds.

6.5.2 Machining procedure. The chips for chemical analysis should be made with a special nonferrous tool in a

place which has been cleaned for that specific purpose. Instructions specified in 6.5.1 apply to the use and care of

this tool.

6.6 Sub-contracted material and parts. The packaging or preparation for delivery of requirements of referenced

documents listed in section 2 do not apply when material and parts are acquired by the contractor for incorporation

into the equipment and lose their separate identity when the equipment is shipped.

6.7 Subject term (key word) listing.

Corrosion

Disc

Galvanic

Plate

Rod

Slab


MIL-DTL-18001L

13

6.8 Changes from previous issue. Marginal notations are not used in this revision to identify changes with

respect to the previous issue due to the extent of the changes.


MIL-DTL-18001L

14

FIGURE 1. Hull slab (steel straps), type ZHS-23/ZHB.

1. MINIMUM WEIGHT = 21.5 LB / 9.7 KG

2. ANODE MAY BE CAST WITH STRAP IN THE UP OR

DOWN POSITION. ALL DIMENSIONS REFER TO THE

WIDER AND LONGER EDGES OF THE ANODES.

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

R1

6.00±.13

12.00±.13

1.25±.13

10.00±.13

2.00±.13

1.13±.13

3.00±.13

.19±.02

1.25±.13

±.06

.18 MIN

.25

+.13/-.06

152.4±3.3

304.8±3.3

31.7±3.3

254±3.3

50.8±3.3

28.7±3.3

76.2±3.3

4.8±.5

31.7±3.3

6.4

+3.3/-1.5

±1.5

4.6 MIN

D10

SECTION A-A

STRAP FEET FLUSH WITH

CASTING BOTTOM W/IN D11

2X D5

8X

R1

2X

D8

2X STEEL

STRAP

SKETCH A1: HULL SLAB (STEEL STRAPS),

1.25" THICK, TYPE ZHS-23/ZHB

FIGURE 1. Hull slab (steel straps), type ZHS-23/ZHB.

D1

2X D9

D2

2X D7

AA

MOLD RAD

PERMITTED

TYP

4X D6

D4

D3

DRAFT

PERMITTED


MIL-DTL-18001L

15

FIGURE 2. Hull slab (steel straps), type ZHS-42.

D1

2X D9

D2

2X D7

AA

MOLD RAD

PERMITTED

TYP

4X D6

D4

D3

DRAFT

PERMITTED

D10

SECTION A-A

STRAP FEET FLUSH WITH

CASTING BOTTOM W/IN D11

2X D5

8X

R1

2X

D8

2X STEEL

STRAP

SKETCH A2: HULL SLAB (STEEL STRAPS),

2.50" THICK, TYPE ZHS-42

1. MINIMUM WEIGHT = 41 LB / 18.6 KG

2. ANODE MAY BE CAST WITH STRAP IN THE UP OR

DOWN POSITION. ALL DIMENSIONS REFER TO THE

WIDER AND LONGER EDGES OF THE ANODES.

EXPOSED

FACE

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4

D5

D6

D7

D8

D9

D10

D11

R1

6.00±.13

12.00±.13

2.50±.13

10.00±.13

2.00±.13

1.13±.13

3.00±.13

.19±.02

1.25±.13

±.06

.18 MIN

.25

+.13/-.06

152.4±3.3

304.8±3.3

63.5±3.3

254±3.3

50.8±3.3

28.7±3.3

76.2±3.3

4.8±.5

31.7±3.3

6.4

+3.3/-1.5

±1.5

4.6 MIN

FIGURE 2. Hull slab (steel straps), type ZHS-42.


MIL-DTL-18001L

16

FIGURE 3. Zinc hull slab (steel straps), type ZHS with 90-degree counterbore.

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4

D5

D6

.56±.06

8.88±.06

.81

+.06/-.00

.625

+.030/-.000

.12±.02

.08 MIN

14.2±1.5

225.5±1.5

20.6

+1.5/-.0

15.9

+.8/-.0

3.0±.5

2.0 MIN

1. SEE SKETCH A1 OR A2 FOR OTHER ANODE DIMENSIONS.

2. MOUNTING HOLES AND COUNTERBORES SHALL ONLY BE

PROVIDED WHEN SPECIFIED.

2X D1

A

HOLE DETAIL A

ØD4

D5

ØD3

D6

FIGURE 2B. Zinc hull slab (steel straps), type ZHS with 90-degree counterbore.

AA

4X MOUNTING HOLES

2X D2

SECTION A-A

ANODE CASTING

2X STEEL

STRAP

SKETCH A3: HULL SLAB (STEEL STRAPS), OPTIONAL

MOUNTING HOLES WITH 90° COUNTERBORES


MIL-DTL-18001L

17

FIGURE 4. Zinc, submarine slab (steel strap), type ZSS-12.

D11

D12

D13

D14

D15

D16

R1

12.0

0±.1

3304.8

±3.3

1.2

5±.1

331.7

±3.3

16.0

0±.1

3406.4

±3.3

2.0

0±.1

350.8

±3.3

1.1

3±.1

328.7

±3.3

.19±.0

24.8

±.5

1.2

5±.1

331.7

±3.3

.25

+.1

3/-

.06

6.4

+3.3

/-1.5

.56±.0

614.2

±1.5

14.8

8±.0

6378±1.5

±.0

6±1.5

.81

+.0

6/-

.00

20.6

+1.5

/-.0

.625

+.0

30/-

.000

15.9

+.8

/-.0

.12±.0

23.0

±.5

.08 M

IN2.0

MIN

.18 M

IN4.6

MIN


DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

3.0

0±.1

376.2

±3.3

D3

D4

D5

D6

D7

D8

D9

D10

SK

ET

CH

B1:

SU

BM

AR

INE

SL

AB

(S

TE

EL

ST

RA

P),

1.2

5" T

HIC

K, T

YP

E Z

SS

-12

1.

MIN

IMU

M W

EIG

HT

: 1

1 L

B /

5 K

G

2.

MO

UN

TIN

G H

OLE

S I

N S

TR

AP

S A

RE

OP

TIO

NA

L A

ND

SH

OU

LD

BE

SU

PP

LIE

D O

NLY

WH

EN

SP

EC

IFIE

D.

3.

AN

OD

E M

AY

BE

CA

ST

WIT

H S

TR

AP

IN

TH

E U

P O

R

DO

WN

PO

SIT

ION

. A

LL

DIM

EN

SIO

NS

(IN

CH

ES

)

RE

FE

R T

O T

HE

WID

ER

AN

D L

ON

GE

R D

IME

NS

ION

S

OF

TH

E A

NO

DE

.

TY

P, M

OLD

RA

D

PE

RM

ITT

ED

D8

AA

D2

D5

D10

D11

D1

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

ST

EE

L S

TR

AP

D7

4X

R1

SE

CT

ION

A-A

D9

ST

RA

P F

EE

T F

LU

SH

WIT

H

CA

ST

ING

BO

TT

OM

W/IN

D12

D4

2X

D6

D3

DR

AF

T

PE

RM

ITT

ED

A

HO

LE

DE

TA

IL A

ØD

14

ØD

13

D15

D16


MIL-DTL-18001L

18



DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

3.5

0±.1

38

8.9

±3.3

D3

D4

D5

D6

D7

D8

D9

D10

D11

D12

D13

D14

D15

D16

R1

12.0

0±.1

33

04.8

±3.3

2.5

0±.1

36

3.5

±3.3

16.0

0±.1

34

06.4

±3.3

2.0

0±.1

35

0.8

±3.3

1.1

3±.1

32

8.7

±3.3

.19±.0

24

.8±.5

1.2

5±.1

33

1.7

±3.3

.375

+.1

3/-

.06

9.5

+3.3

/-1

.5

.56±.0

61

4.2

±1.5

14.8

8±.0

6378±1.5

±.0

6±1.5

.81

+.0

6/-

.00

20.6

+1.5

/-.0

.625

+.0

30/-

.000

15.9

+.8

/-.0

.12±.0

23

.0±.5

.08 M

IN2

.0 M

IN

.18 M

IN4

.6 M

IN

SK

ET

CH

B2:

SU

BM

AR

INE

SL

AB

(S

TE

EL

ST

RA

P),

2.5

0" T

HIC

K, T

YP

E Z

SS

-24

TY

P, M

OLD

RA

D

PE

RM

ITT

ED

D8

AA

D2

D5

D10

D11

D1

ST

EE

L S

TR

AP

D7

4X

R1

SE

CT

ION

A-A

D9

ST

RA

P F

EE

T F

LU

SH

WIT

H

CA

ST

ING

BO

TT

OM

W/I

N D

12

D4

2X

D6

D3

DR

AF

T

PE

RM

ITT

ED

A

HO

LE

DE

TA

IL A

ØD

14

ØD

13

D15

D16

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

1.

MIN

IMU

M W

EIG

HT

: 2

1.5

LB

/ 9

.8 K

G

2.

MO

UN

TIN

G H

OLE

S I

N S

TR

AP

S A

RE

OP

TIO

NA

L A

ND

SH

OU

LD

BE

SU

PP

LIE

D O

NLY

WH

EN

SP

EC

IFIE

D.

3.

AN

OD

E M

AY

BE

CA

ST

WIT

H S

TR

AP

IN

TH

E U

P O

R

DO

WN

PO

SIT

ION

. A

LL

DIM

EN

SIO

NS

(IN

CH

ES

)

RE

FE

R T

O T

HE

WID

ER

AN

D L

ON

GE

R D

IME

NS

ION

S

OF

TH

E A

NO

DE

.


MIL-DTL-18001L

19

FIGURE 6. Zinc, submarine slab (steel strap), type ZSS with elongated stud hole.

FIGURE 5. Zinc, submarine slab (steel strap), type ZSS with elongated stud hole.

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D4

D5

D6

D7

D8

D10

D11

D12

D14

R1

16.3

8±.1

34

16±3.3

2.3

8±.1

36

0.5

±3.3

1.5

0±.1

33

8.1

±3.3

.19±.0

24

.8±.5

1.2

5±.1

33

1.7

±3.3

.75±.0

61

9.0

±1.5

.625

+.0

5/-

.00

15.9

+1.3

/-.0

0

.75±.0

31

9.0

±.8

15.2

5±.0

43

87.4

±1.0

.18 M

IN4

.6 M

IN

ST

EE

L S

TR

AP

D14

D4

D10

2X

ØD

11

SK

ET

CH

B3

: S

UB

MA

RIN

E S

LA

B S

TE

EL

ST

RA

P, E

LO

NG

HO

LE

CO

NF

IG

1.

ALL

OT

HE

R D

IME

NS

ION

S A

RE

SH

OW

N O

N S

KE

TC

H B

1

OR

B2.

2.

TH

E E

LO

NG

AT

ED

HO

LE

CO

NF

IGU

RA

TIO

N S

HA

LL B

E

PR

OV

IDE

D O

NLY

WH

EN

SP

EC

IFIE

D.

D8

AA

D5

2X

D12

D7

4X

R1

SE

CT

ION

A-A

2X

D6

LE

TT

ER

ING

AS

SH

OW

N

ON

SK

ET

CH

B1 O

R B

2


MIL-DTL-18001L

20

FIGURE 7. Zinc, teardrop (steel strap), type ZTS.

FIGURE 6. Zinc, teardrop (steel strap), type ZTS.

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

D5

D6

9.0

0±.1

32

28

.6±3

.3

1.0

02

5.4

±.1

3±3

.3

12

.00

±.1

33

04

.8±3

.3

1.5

0±.1

33

8.1

±3

.3

.75

±.1

31

9±3

.3

SK

ET

CH

C:

TE

AR

DR

OP

SH

AP

E (

ST

EE

L S

TR

AP

), T

YP

E Z

TS

1.

MIN

IMU

M W

EIG

HT

: 5

.0 L

B / 2

.3 K

G

2.

CO

NT

OU

R T

OLE

RA

NC

E IS

±D

3 M

EA

SU

RE

D N

OR

MA

L T

O S

UR

FA

CE

.

CO

NT

OU

R S

HA

LL B

E H

YD

RO

DY

NA

MIC

ALLY

FA

IR.

3.

AN

OD

E M

AY

BE

CA

ST

WIT

H E

XP

OS

ED

FA

CE

IN

TH

E U

P O

R D

OW

N P

OS

ITIO

N.

D7

D8

.13

±.0

63

.3±1

.5

.25

±.1

36

.4±3

.3

D9

.94

±.1

32

3.9

±3

.3

D1

0±.1

3±3

.3

R1

.11

MIN

2.8

MIN

CO

NT

OU

R D

EF

INIT

ION

PO

INT

S (

SE

E N

OT

E 2

)

A

IM

PE

RIA

L (

IN)

M

ET

RIC

(M

M)

1.1

1

28

.2

BC

DE

FG

H

SE

CT

ION

A-A

D1

ST

EE

L S

TR

AP

ST

RA

P F

EE

T F

LU

SH

WIT

H

CA

ST

ING

BO

TT

OM

W/IN

D10D8

D7

2X

D9

0.0

0

4X

R1

CA

ST

AN

OD

E

AA D6

JK

LM

NP

QR

1.4

31

.50

1.4

61

.35

1.1

7.9

3.6

31

.38

1.5

01

.48

1.4

31

.35

1.2

51

.11

.87

36

.33

8.1

37

.13

4.3

29

.72

3.6

16

.03

5.1

38

.13

7.6

36

.33

4.3

31

.72

8.2

22

.1

D2

D5

0.0

0

7X

D2

D4

A

BC

DE F G H

J7X

D2

KL

MN P Q R


MIL-DTL-18001L

21

FIGURE 8. Zinc hull slab (steel strap), type ZHC-23.

FIGURE 7. Zinc hull slab (steel strap), type ZHC-23.

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

6.0

0±.1

31

52

.4±3

.3

D3

D4

D5

D6

D7

D8

D1

0

D1

1

D1

2

12

.00

±.1

33

04

.8±3

.3

1.2

5±.1

33

1.8

±3

.3

8.0

0±.1

32

03

.2±3

.3

1.5

0±.1

33

8.1

±3

.3

2.0

0±.1

35

0.8

±3

.3

1.0

0±.0

62

5.4

±1

.5

.63

±.1

31

6.0

±3

.3

.25

+.1

3/-

.06

6.4

+3

.3/-

1.5

1.0

0±.0

62

5.4

±1

.5

2.0

0±.0

65

0.8

±1

.5S

KE

TC

H D

1:

HU

LL

SL

AB

(C

OR

E S

TR

AP

),

TY

PE

ZH

C-2

3,

1.2

5" T

HK

, 1

.00

" B

TM

C'S

INK

D9

.25

±.1

36

.4±3

.3

D1

3

D1

4

6.0

0±.0

61

52

.4±1

.5

1.5

6±.0

63

9.6

±1

.5

SE

CT

ION

A-A

D3

2X

ØD

12

2X

ØD

14

DR

AF

T

PE

RM

ITT

ED

D9

ST

EE

L C

OR

E2

X Ø

D1

1

D1

0

A

D1 2

AD

5

D1

TY

P,

MO

LD

RA

D

PE

RM

ITT

ED

D2

2X

ØD

8

D1

3D

7

D6

D4

1.

MIN

IMU

M W

EIG

HT

= 2

0.4

LB

/ 9

.3 K

G

2.

AN

OD

E M

AY

BE

CA

ST

WIT

H S

TR

AP

IN

TH

E U

P O

R

DO

WN

PO

SIT

ION

. A

LL D

IME

NS

ION

S R

EF

ER

TO

TH

E

WID

ER

AN

D L

ON

GE

R E

DG

ES

OF

TH

E A

NO

DE

S.


MIL-DTL-18001L

22

FIGURE 9. Hull slab (steel core), type ZHC-23 with countersink for neoprene washer.

FIGURE 8. Hull slab (steel core), type ZHC-23 with countersink for neoprene washer.

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BLE

OF

DIM

EN

SIO

NS

D1

D2

6.0

0±.1

3152

.4±3.3

D3

D4

D5

D6

D7

D8

D10

D11

D12

12.0

0±.1

3304

.8±3.3

1.2

5±.1

331.8

±3.3

8.0

0±.1

3203

.2±3.3

1.5

0±.1

338.1

±3.3

2.0

0±.1

350.8

±3.3

1.0

0±.0

625.4

±1.5

.63

±.1

316.0

±3.3

.25

+.1

3/-

.06

6.4

+3.3

/-1.5

1.5

0±.1

338.1

±3.3

2.0

0±.0

650.8

±1.5

SK

ET

CH

D2:

HU

LL

SL

AB

(S

TE

EL

CO

RE

), T

YP

E

ZH

C-2

3, 1.2

5" T

HK

, 1.5

0" B

TM

C'S

INK

D9

.25

±.1

36.4

±3.3

D13

D14

6.0

0±.0

6152

.4±1.5

1.5

6±.0

639.6

±1.5

SE

CT

ION

A-A

D3

2X

ØD

12

2X

ØD

14

DR

AF

T

PE

RM

ITT

ED

D9

ST

EE

L C

OR

E

2X

ØD

11, F

OR

NE

OP

RE

NE

WA

SH

ER

D10

A

D1 2

AD

5

D1

TY

P, M

OLD

RA

D

PE

RM

ITT

ED

D2

2X

ØD

8

D13

D7

D6

D4

D15

1.3

8±.0

635.0

±1.5

2X

ØD

15

1.

MIN

IMU

M W

EIG

HT

= 2

0.4

LB

/ 9

.3 K

G

2.

AN

OD

E M

AY

BE

CA

ST

WIT

H S

TR

AP

IN

TH

E U

P O

R

DO

WN

PO

SIT

ION

.


MIL-DTL-18001L

23

FIGURE 10. Zinc, hull slab (steel core), type ZHC-42.

AD

5

D1

TY

P, M

OLD

RA

D

PE

RM

ITT

ED

D2

2X

ØD

8

D13

D7

D6

D4

1.

MIN

IMU

M W

EIG

HT

= 3

9 L

B / 1

7.7

KG

2.

AN

OD

E M

AY

BE

CA

ST

WIT

H E

XP

OS

ED

FA

CE

IN

TH

E

UP

OR

DO

WN

PO

SIT

ION

.

D9

.25±.1

36.4

±3.3

D13

D14

6.0

0±.0

6152.4

±1.5

1.5

6±.0

639.6

±1.5

SE

CT

ION

A-A

D3

2X

ØD

12

2X

ØD

14

DR

AF

T

PE

RM

ITT

ED

D9

ST

EE

L C

OR

E2X

ØD

11

D10

A

D1 2


DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

6.0

0±.1

3152.4

±3.3

D3

D4

D5

D6

D7

D8

D10

D11

D12

12.0

0±.1

3304.8

±3.3

2.5

0±.1

363.5

±3.3

8.0

0±.1

3203.2

±3.3

1.5

0±.1

338.1

±3.3

2.0

0±.1

350.8

±3.3

1.0

0±.0

625.4

±1.5

.63±.1

316.0

±3.3

.25

+.1

3/-

.06

6.4

+3.3

/-1.5

1.0

0±.0

625.4

±1.5

2.0

0±.0

650.8

±1.5

SK

ET

CH

D3:

HU

LL

SL

AB

(S

TE

EL

CO

RE

),

TY

PE

ZH

C-4

2, 2.5

0" T

HIC

K, 1.0

0" B

TM

C'S

INK


MIL-DTL-18001L

24

FIGURE 11. Zinc, hull slab (steel core), type ZHC-42 with countersink for neoprene washer.


DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

6.0

0±.1

31

52

.4±3

.3

D3

D4

D5

D6

D7

D8

D1

0

D1

1

D1

2

12

.00

±.1

33

04

.8±3

.3

2.5

0±.1

36

3.5

±3

.3

8.0

0±.1

32

03

.2±3

.3

1.5

0±.1

33

8.1

±3

.3

2.0

0±.1

35

0.8

±3

.3

1.0

0±.0

62

5.4

±1

.5

.63

±.1

31

6.0

±3

.3

.25

+.1

3/-

.06

6.4

+3

.3/-

1.5

1.5

0±.1

33

8.1

±3

.3

2.0

0±.0

65

0.8

±1

.5

SK

ET

CH

D4

: H

UL

L S

LA

B (

ST

EE

L C

OR

E),

TY

PE

ZH

C-4

2,

2.5

0" T

HIC

K,

1.5

0" B

TM

C'S

INK

D9

.25

±.1

36

.4±3

.3

D1

3

D1

4

6.0

0±.0

61

52

.4±1

.5

1.5

6±.0

63

9.6

±1

.5

SE

CT

ION

A-A

D3

2X

ØD

12

2X

ØD

14

DR

AF

T

PE

RM

ITT

ED

D9

D1

0

A

D1 2

AD

5

D1

TY

P,

MO

LD

RA

D

PE

RM

ITT

ED

D2

2X

ØD

8

D1

3D

7

D6

D4

ST

EE

L C

OR

E

2X

ØD

11

, F

OR

NE

OP

RE

NE

WA

SH

ER

2X

ØD

15

D1

51

.38

±.0

63

5.0

±1

.51

.M

INIM

UM

WE

IGH

T =

39 L

B / 1

7.7

KG

2.

AN

OD

E M

AY

BE

CA

ST

WIT

H S

TR

AP

IN

TH

E U

P O

R

DO

WN

PO

SIT

ION

.


MIL-DTL-18001L

25

FIGURE 12. Zinc, fairwater slab, pipe core (style A) ZEP (1" thick).

FIGURE 11. Zinc, fairwater slab, pipe core (style A) ZEP (1" thick).

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4*

D5*

6.00±.13

1.00±.13

.13±.06

.62±.02

.84±.02

152.4±3.3

25.4±3.3

3.3±1.5

15.7±.5

21.3±.5

A

SKETCH E1: FAIRWATER SLAB,

STYLE A (PIPE CORE), TYPE ZEP, 1.00" THICKMINIMUM WEIGHT = 9 LB / 4.1 KG

SECTION A-A

MOLD RAD

PERMITTED

TYP

* CORRESPONDS TO ASTM A524

1/2" SCHED 40 OR BS EN 10305-1

22MM STEEL PIPE SIZES.

A

D1

D1

D1

2

D1

2

GROOVED, SERRATED,

OR THREADED

PLAIN STEEL

PIPE

ØD4

ØD5

2X D3D2

DRAFT

PERMITTED


MIL-DTL-18001L

26

FIGURE 13. Zinc, fairwater slab, pipe core (style B), type ZEP (2" diameter, 1" thick).

D4**

D5**

.84±.02

.62±.02

21.3±.5

15.7±.5

DRAFT

PERMITTED

PLAIN STEEL

PIPE

ØD5

ØD4

D2

2X D3

MOLD RAD

PERMITTEDGROOVED, SERRATED,

OR THREADED

AA

LETTERING ON EXPOSED FACE

ØD1

FIGURE 13. Zinc, fairwater slab, pipe core (style B) ZEP (2" diameter, 1" thick).

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4*

D5*

2.00±.13

1.00±.13

.13±.06

.68±.02

.42±.02

50.8±3.3

25.4±3.3

3.3±1.5

17.3±.5

10.7±.5

SKETCH F1: FAIRWATER SLAB, STYLE B,

2.0" DIAM (PIPE CORE), TYPE ZEP, 1.00" THICKMINIMUM WEIGHT = 0.79 LB / 0.35 KG

SECTION A-A


3/8" SCHED 80 OR BS EN 10305-1


** CORRESPONDS TO ASTM A524

1/2" SCHED 40 OR BS EN 10305-1



MIL-DTL-18001L

27


ØD

4

AA

ØD

1

PLA

IN S

TE

EL

PIP

E

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED

DR

AF

T

PE

RM

ITT

ED

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

SK

ET

CH

F2

: F

AIR

WA

TE

R S

LA

B,

ST

YL

E B

,

3.0

0" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1.0

0"

TH

ICK

MIN

IMU

M W

EIG

HT

= 1

.78

LB

/ 0

.81 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BLE

OF

DIM

EN

SIO

NS

D1

D2

D3

D4*

D5*

3.0

0±.1

3

1.0

0±.1

3

.13±.0

6

.68±.0

2

.42±.0

2

76.2

±3.3

25.4

±3.3

3.3

±1.5

17.3

±.5

10.7

±.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A524

3/8

" S

CH

ED

80 O

R B

S E

N 1

0305-1

18M

M S

TE

EL P

IPE

SIZ

ES

.

**C

OR

RE

SP

ON

DS

TO

AS

TM

A524

1/2

" S

CH

ED

40 O

R B

S E

N 1

0305-1

22M

M S

TE

EL P

IPE

SIZ

ES

.

D4**

D5**

.84±.0

2

.62±.0

2

21.3

±.5

15.7

±.5


SE

CT

ION

A-AØ

D5

D2

2X

D3

MO

LD

RA

D

PE

RM

ITT

ED


MIL-DTL-18001L

28


D2

2X

D3

MO

LD

RA

D

PE

RM

ITT

ED

AA

ØD

1

PL

AIN

ST

EE

L

PIP

E

DR

AF

T

PE

RM

ITT

ED

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

SK

ET

CH

F3

: F

AIR

WA

TE

R S

LA

B, S

TY

LE

B,

4.0

0" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1

.00

" T

HIC

KM

INIM

UM

WE

IGH

T =

3.1

9 L

B /

1.4

5 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

*

D5

*

4.0

0±.1

3

1.0

0±.1

3

.13

±.0

6

.68

±.0

2

.42

±.0

2

10

1.6

±3

.3

25

.4±3

.3

3.3

±1

.5

17

.3±.5

10

.7±.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A5

24

3/8

" S

CH

ED

80

OR

BS

EN

10

30

5-1

18

MM

ST

EE

L P

IPE

SIZ

ES

.

**C

OR

RE

SP

ON

DS

TO

AS

TM

A5

24

1/2

" S

CH

ED

40

OR

BS

EN

10

30

5-1

22

MM

ST

EE

L P

IPE

SIZ

ES

.

D4

**

D5

**

.84

±.0

2

.62

±.0

2

21

.3±.5

15

.7±.5


SE

CT

ION

A-A

ØD

5

ØD

4


MIL-DTL-18001L

29


PL

AIN

ST

EE

L

PIP

E

DR

AF

T

PE

RM

ITT

ED

D2

2X

D3

MO

LD

RA

D

PE

RM

ITT

ED

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED

AA

ØD

1

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

SK

ET

CH

F4

: F

AIR

WA

TE

R S

LA

B,

ST

YL

E B

,

5.0

0" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1

.00

" T

HIC

KM

INIM

UM

WE

IGH

T =

4.9

LB

/ 2

.2 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

*

D5

*

5.0

0±.1

3

1.0

0±.1

3

.13

±.0

6

.68

±.0

2

.42

±.0

2

127±3.3

25.4

±3

.3

3.3

±1.5

17.3

±.5

10.7

±.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A524

3/8

" S

CH

ED

80

OR

BS

EN

103

05-1

18

MM

ST

EE

L P

IPE

SIZ

ES

.

**C

OR

RE

SP

ON

DS

TO

AS

TM

A524

1/2

" S

CH

ED

40

OR

BS

EN

103

05-1

22

MM

ST

EE

L P

IPE

SIZ

ES

.

D4

**

D5

**

.84

±.0

2

.62

±.0

2

21.3

±.5

15.7

±.5

FIGURE 16. Zinc, fairwater slab, pipe core (style B) type ZEP (5" diameter, 1" thick).

SE

CT

ION

A-AØD

5

ØD

4


MIL-DTL-18001L

30


SK

ET

CH

F5

: F

AIR

WA

TE

R S

LA

B, S

TY

LE

B,

6.0

0" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1.0

0" T

HIC

KM

INIM

UM

WE

IGH

T =

7.2

LB

/ 3

.3 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

*

D5

*

6.0

0±.1

3

1.0

0±.1

3

.13

±.0

6

.68

±.0

2

.42

±.0

2

152.4

±3.3

25.4

±3

.3

3.3

±1

.5

17

.3±.5

10

.7±.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A52

4

3/8

" S

CH

ED

80

OR

BS

EN

103

05-1

18

MM

ST

EE

L P

IPE

SIZ

ES

.

**C

OR

RE

SP

ON

DS

TO

AS

TM

A52

4

1/2

" S

CH

ED

40

OR

BS

EN

103

05-1

22

MM

ST

EE

L P

IPE

SIZ

ES

.

D4

**

D5

**

.84

±.0

2

.62

±.0

2

21

.3±.5

15

.7±.5

FIGURE 17. Zinc, fairwater slab, pipe core (style B) type ZEP (6" diameter, 1" thick).

SE

CT

ION

A-AØ

D5

ØD

4D

RA

FT

PE

RM

ITT

ED

D2

2X

D3

MO

LD

RA

D

PE

RM

ITT

ED

PL

AIN

ST

EE

L P

IPE

AA LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

ØD

1

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED


MIL-DTL-18001L

31


2X

ØD

4

2X

ØD

5D

RA

FT

PE

RM

ITT

ED

D2

4X

D3

2X

PL

AIN

ST

EE

L P

IPE

AA

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

D6

D7

2X

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED

ØD

1

SK

ET

CH

F6

: F

AIR

WA

TE

R S

LA

B, S

TY

LE

B,

9.0

0" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1.0

0" T

HIC

KM

INIM

UM

WE

IGH

T =

16

LB

/ 7

.3 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

*

D5

*

9.0

0±.1

3

1.0

0±.1

3

.13

±.0

6

22

8.6

±3

.3

25

.4±3

.3

3.3

±1

.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A5

24

1/2

" S

CH

ED

40

OR

BS

EN

10

30

5-1

22

MM

ST

EE

L P

IPE

SIZ

ES

.

D6

D7

.84

±.0

2

.62

±.0

2

21

.3±.5

15

.7±.5


SE

CT

ION

A-A

MO

LD

RA

D

PE

RM

ITT

ED

1.7

5±.0

64

4.5

±1

.5

3.5

0±.0

38

8.9

±.8


MIL-DTL-18001L

32


AA

D6

D7

ØD

1

2X

ØD

4

2X

GR

OO

VE

(S),

SE

RR

AT

ION

S,

OR

TH

RE

AD

S

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

2X

ØD

5

DR

AF

T

PE

RM

ITT

ED

2X

PL

AIN

ST

EE

L P

IPE

4X

D3

MO

LD

RA

D

PE

RM

ITT

ED

D2

SK

ET

CH

F9

: F

AIR

WA

TE

R S

LA

B, S

TY

LE

B,

11

.00

" D

IAM

(P

IPE

CO

RE

), T

YP

E Z

EP

, 1

.00

" T

HIC

KM

INIM

UM

WE

IGH

T =

24

LB

/ 1

0.9

KG

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

*

D5

*

11

.00

±.1

3

1.0

0±.1

3

.13

±.0

6

27

9.4

±3

.3

25

.4±3

.3

3.3

±1

.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A5

24

1/2

" S

CH

ED

40

OR

BS

EN

10

30

5-1

22

MM

ST

EE

L P

IPE

SIZ

ES

.

D6

D7

.84

±.0

2

.62

±.0

2

21

.3±.5

15

.7±.5

FIGURE 19. Aluminum, fairwater slab, pipe core (style B) AEP/LEP (11" diameter, 1" thick).

SE

CT

ION

A-A

1.7

5±.0

64

4.5

±1

.5

3.5

0±.0

38

8.9

±.8


MIL-DTL-18001L

33

FIGURE 20. Zinc, fairwater slab, pipe core (style C) type ZEP.

AA

2X

GR

OO

VE

D, S

ER

RA

TE

D,

OR

TH

RE

AD

ED

DR

AF

T

PE

RM

ITT

ED

2X

ØD

72X

ØD

6

4X

D8

SK

ET

CH

G:

FA

IRW

AT

ER

SL

AB

,

ST

YL

E C

(P

IPE

CO

RE

), T

YP

E Z

EP

MIN

IMU

M W

EIG

HT

= 2

3 L

B /

10.5

KG

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BLE

OF

DIM

EN

SIO

NS

D1

D2

D3

D6*

D7*

.13±.0

6

1.0

0±.1

3

3.0

6±.0

6

3.3

±1.5

25.4

±3.3

77.7

±1.5

*C

OR

RE

SP

ON

DS

TO

AS

TM

A524

1/2

" S

CH

ED

40 O

R B

S E

N 1

0305-1

22M

M S

TE

EL

PIP

E S

IZE

S.

D8

R1

.62±.0

2

.84±.0

2

15.7

±.5

21.3

±.5

FIGURE 19. Zinc, fairwater slab, pipe core (style C) type ZEP.

SE

CT

ION

A-A

.13±.0

63.3

±1.5

7.5

0±.1

2190.5

±3

D4

3.1

9±.0

681.0

±1.5

D5

6.3

75±.0

16

161.9

±.4

D2

2X

PLA

IN S

TE

EL

PIP

E

D5

TY

P, M

OLD

RA

D

PE

RM

ITT

ED

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

D4

R1

D1

D3


MIL-DTL-18001L

34

FIGURE 21. Zinc, bar, pipe core type ZBP.

A A

D4

D1D3

PLAIN STEEL

PIPE

LETTERING ON EXPOSED FACE

D2

2

D2

D2

2D2

ØD5

ØD6

DRAFT

PERMITTED

TYP MOLD RAD

PERMITTED

FIGURE 21. Zinc, bar, pipe core type ZBP.

DIMIMPERIAL

(INCH)

METRIC

(MM)

TABLE OF DIMENSIONS

D1

D2

D3

D4

D5*

7.50±.13

2.00±.13

12.00±.13

2.25±.13

.62±.02

190.5±3.3

50.8±3.3

304.8±3.3

57.2±3.3

15.7±.5

SKETCH H1: BAR SHAPE (PIPE CORE),

TYPE ZBPMINIMUM WEIGHT = 8 LB / 3.6 KG


1/2" SCHED 40 OR BS EN 10305-1


D6* .84±.02 21.3±.5

SECTION A-A


MIL-DTL-18001L

35

FIGURE 22. Zinc, bar, steel core type ZBS.

FIGURE 22. Zinc, bar, steel strap core type ZBS.

DR

AF

T

PE

RM

ITT

ED

TY

P M

OL

D R

AD

PE

RM

ITT

ED

D2 2

D2

A

SE

CT

ION

A-A

A

HO

LE

DE

TA

IL AØD

14

ØD

13

D1

5

D1

6

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

D4

D5

7.5

±.1

3

2.0

±.1

3

14

.0±.1

3

3.2

5±.1

3

1.2

5±.1

3

19

0.5

±3

.3

50

.8±3

.3

35

5.6

±3

.3

82

.6±3

.3

31

.7±3

.3

SK

ET

CH

H2

: B

AR

SH

AP

E (

ST

EE

L

ST

RA

P C

OR

E),

TY

PE

ZB

SM

INIM

UM

WE

IGH

T =

8.5

LB

/ 3

.8 K

G

D6

.28

5±.0

27

.2±.5

D7

D8

D9

2.2

8±.1

3

1.4

3±.1

3

12

.88

±.1

3

57

.9±3

.3

36

.3±3

.3

32

7.2

±3

.3

D8

PL

AIN

ST

EE

L

ST

RA

P

D1

3.8

1

+.0

6/-

.00

20

.6

+1

.5/-

.0

D1

4.6

25

+.0

30

/-.0

00

15

.9

+.8

/-.0

D1

5.1

2±.0

23

.0±.5

D1

6.0

8 M

IN2

.0 M

IN

R1

.18

MIN

4.6

MIN

4X

R1

D1

2

SE

CT

ION

B-B

D6D

7

D5

D1

D4

D3

D9

LE

TT

ER

ING

ON

EX

PO

SE

D F

AC

E

A

D2 2

D2

D1

0.2

8±.1

37

.1±3

.3

D1

0

.56

±.0

61

4.2

±1

.5

2X

D1

1

D1

11

.13

±.1

32

8.7

±3

.3

D1

2

B B


MIL-DTL-18001L

36

FIGURE 23. Zinc, rod shape (no core), type ZRN.

NO

M P

IPE

SIZ

E

TA

BL

E O

F D

IME

NS

ION

S

1/8

1/4

3/8

1/2

3/4

.405

10.3

D1 (

INC

HE

S)

±0.0

20 IN

CH

D1 (

MM

)

±0.5

MM

NO

M W

T P

ER

FO

OT

LE

NG

TH

(LB

)

NO

M W

T P

ER

FO

OT

LE

NG

TH

(K

G)

.40

.18

.540

13.7

.71

.32

.675

17.1

1.1

0.5

0

.840

21.3

1.7

1.7

8

1.0

50

26.7

2.6

71.2

1

DE

TA

IL S

EC

T A

-A

A A

SP

EC

IFY

LE

NG

TH

36.0

0±.2

5"

(914±6M

M)

OR

72.0

0±.2

5"

(1828±6.3

5M

M)

ØD

1.2

5"

(6M

M)

SK

ET

CH

I:

RO

D S

HA

PE

(N

O C

OR

E),

TY

PE

ZR

N,

36

" L

ON

G O

R 7

2" L

ON

G

FIGURE 21. Zinc, rod shape (no core), type ZRN.


MIL-DTL-18001L

37

FIGURE 24. Zinc, segmented disk assembly anode (interlocking core), type ZDM.

TH

RE

AD

SE

GM

EN

TS

IN

TO

EA

CH

OT

HE

R

TO

AC

HIE

VE

RE

QU

IRE

D L

EN

GT

H

TY

P D

ISK

SE

GM

EN

T W

ITH

TH

RE

AD

ED

CO

RE

, S

EE

SK

ET

CH

J2

AT

TA

CH

SE

GM

EN

TS

TO

SU

PP

OR

T P

LU

G,

US

E C

LA

SS

A P

LU

G (

SK

ET

CH

J3

) O

R

CL

AS

S B

PL

UG

(S

KE

TC

H J

4)

AS

RE

QU

IRE

D.

SK

ET

CH

J1

: S

EG

ME

NT

ED

DIS

K A

SS

EM

BL

Y A

NO

DE

(MA

CH

INE

-FO

RM

ED

IN

TE

RL

OC

KIN

G C

OR

ES

), T

YP

E Z

DM

FIGURE 22. Zinc, segmented disk assembly anode (interlocking cores), type ZDM.

1.

DIS

K S

EG

ME

NT

NO

MIN

AL

SIZ

E S

HA

LL M

AT

CH

NO

MIN

AL

SIZ

E O

F S

UP

PO

RT

PL

UG

US

ED

. S

EE

SK

ET

CH

ES

J2 -

J4.


MIL-DTL-18001L

38

FIGURE 25. Zinc, segmented disk (interlocking thread core), type ZDM.

PR

ES

S F

IT S

TE

EL

TH

RE

AD

ED

CO

RE

INT

O Z

INC

DIS

K

ZIN

C D

ISK

.031

±.0

16

"

(.7

9±.4

0M

M)

#1

2-2

8U

NF

-2B

ØD

5,

ST

RA

IGH

T

KN

UR

L

US

E T

AP

ER

ST

YL

E

TA

P F

OR

IN

TR

F F

IT

D9x4

5°

TY

P

D6

2.3

9±.7

9

D7

.81

2

+.0

05

/-.0

00

20

.62

+.1

3/-

.00

.25±.0

66.4

±1.5

.016

±.0

04

.40±.1

0

.50 +

.12

/-.0

012

.7 +

3.0

/-0.0

0.3

2 +

.00/-

.04

8.1

+.0

/-.8

PL

UG

NO

M P

IPE

SIZ

E

TH

RE

AD

ED

CO

RE

DIM

S

1

D1

(IN

CH

)

D1

(MM

)D

2 (

INC

H)

.31

3

+.0

02/-

.00

0

D2

(M

M)

7.9

5

+.0

5/-

.00

QT

Y

PE

R

PK

G

PK

G

WT

(LB

S)

PK

G

WT

(KG

)

3/4

1/2

3/8

1.0

50

±.0

16

.825

±.0

16

.625

±.0

16

.500

±.0

16

26

.67

±.4

0

20

.96

±.4

0

15

.88

±.4

0

12

.70

±.4

0

.31

3

+.0

02/-

.00

0

.31

3

+.0

02/-

.00

0

.31

3

+.0

02/-

.00

0

7.9

5

+.0

5/-

.00

7.9

5

+.0

5/-

.00

7.9

5

+.0

5/-

.00

50

83.6

10

0

20

0

20

0

10

12 8

4.5

5.4

3.6

.75

0±.0

16

"

19.1

±.4

MM

ZIN

C D

ISK

ET

CH

LE

TT

ER

S "

ZD

M"

AN

D N

OM

SIZ

E

ØD

2

ØD

1

SK

ET

CH

J2:

SE

GM

EN

TE

D D

ISK

(IN

TE

RL

OC

KIN

G T

HR

EA

DE

D C

OR

E),

TY

PE

ZD

M

DIM

INC

HM

M

TH

RE

AD

ED

CO

RE

DIM

S

D3

D4

D5

.40 +

.04

/-.0

010

.2 +

1.0

/-0.0

FIGURE 23. Zinc, segmented disk (interlocking threaded core), type ZDM.

D6

D8

D9

D1

0

D1

1

.313

+.0

00

/-.0

02

7.9

5

+.0

0/-

.05

.32

0

+.0

30

/-.0

02

8.1

3

+.7

6/-

.05

.094

±.0

31

D7

D3

,

.34

0"

(8.6

4M

M)

MIN

FU

LL T

HD

D11

(F

UL

L

TH

D)

D1

0

D8

ØD

4

(ST

OC

K)

#1

2-2

8U

NF

-2A

TH

D C

OR

E,

CA

RB

ON

ST

EE

L,

AN

NE

AL

ED


MIL-DTL-18001L

39

FIGURE 26. Zinc, segmented disk support plug, class A (straight thread O-ring seal), type ZDM.

D10

D11

D12

R13

D14

NO

M 3

4"

(IN

CH

)N

OM

34"

(MM

)

NO

M 1

"

(IN

CH

)

NO

M 1

"

(MM

)

1116"-

12U

N-2

A1

116"-

12U

N-2

A1

516"-

12U

N-2

A1

516"-

12U

N-2

A

.500±.0

16

12.7

±.4

.500±.0

16

12.7

±.4

.06±.0

21.5

±.5

.06±.0

21.5

±.5

.625

±.0

16

15.8

7

±.4

0

.875

±.0

16

22.2

2

±.4

0

1.6

88

±.0

16

42.9

±.4

0

1.9

38

±.0

16

49.2

1

±.4

0

.53±.0

313.5

±.8

.53±.0

313.5

±.8

1.4

38

±.0

16

36.5

3

±.4

0

1.6

88

±.0

16

42.8

8

±.4

0

.06

+.0

3/-

.00

1.5

+.8

/-.0

.06

+.0

3/-

.00

1.5

+.8

/-.0

.188

±.0

16

4.7

8

±.4

0

.188

±.0

16

4.7

8

±.4

0

.938

±.0

16

23.8

3

±.4

0

1.1

88

±.0

16

30.1

8

±.4

0

.188

±.0

16

4.7

8

±.4

0

.188

±.0

16

4.7

8

±.4

0

.113

2.8

7

+.0

0/-

.12

.113

2.8

7

+.0

0/-

.12

.031

±.0

16

.79±.4

0.0

31

±.0

16

.79±.4

0

.125

±.0

16

3.1

8

±.4

0

.125

±.0

16

3.1

8

±.4

0

HE

X,

D5

AC

R F

LA

TS

2X

R13

63u

IN

1.6

uM

ET

CH

LE

TT

ER

S "

ZD

M"

AN

D N

OM

SIZ

E

D12

D14

7°

MA

X

BR

EA

K E

DG

E

D11

2X

D9

2X

D9

D6

D1

#1

2-2

8U

NF

-2B D4

6X

D3x45°

D2

ØD

7

ØD

10

2X

ØD

8

SK

ET

CH

J3:

SE

GM

EN

TE

D D

ISK

SU

PP

OR

T

PL

UG

, C

LA

SS

A (

ST

RA

IGH

T T

HD

O-R

ING

SE

AL

), F

OR

AN

OD

E T

YP

E Z

DM

FIGURE 24. Zinc, segmented disk support plug, class A (straight thread O-ring seal) type ZDM.

1.

SU

RF

AC

E F

INIS

H I

S 1

25 R

A M

ICR

O-I

NC

H (

3.2

MIC

RO

-ME

TE

R)

EX

CE

PT

AS

SH

OW

N.

2.

SP

EC

IFY

EIT

HE

R 3

4"

NO

MIN

AL O

R 1

" N

OM

INA

L S

IZE

.

DIM

CLA

SS

A P

LU

G D

IME

NS

ION

S

D1

D2

D3

D4

D5

D6

D7

D8

D9


MIL-DTL-18001L

40

FIGURE 27. Zinc, segmented disk support plug, class B (tapered pipe thread), type ZDM.

SK

ET

CH

J4

: S

EG

ME

NT

ED

DIS

K S

UP

PO

RT

PL

UG

, C

LA

SS

B (

TA

PE

RE

D P

IPE

TH

RE

AD

),

FO

R A

NO

DE

TY

PE

ZD

M

FIGURE A-25. Zinc, segmented disk support plug, class B (tapered pipe thread) type ZDM.

1.

SU

RF

AC

E F

INIS

H IS

125 R

A M

ICR

O-I

NC

H (

3.2

MIC

RO

-ME

TE

R).

2.

ST

D T

OLE

RA

NC

E IS

±.0

16"

(±.4

0 M

M)

UN

LE

SS

OT

HE

RW

ISE

SP

EC

IFIE

D.

NO

M P

IPE

SIZ

E, (U

NIT

S)

CL

AS

S B

PL

UG

DIM

EN

SIO

NS

NO

M S

IZE

1 (

INC

H)

D1

D2

D3

D4

D5

D6

D7

NO

M S

IZE

1 (

MM

)

NO

M S

IZE

34 (

INC

H)

NO

M S

IZE

34 (

MM

)

NO

M S

IZE

12 (

INC

H)

NO

M S

IZE

12 (

MM

)

NO

M S

IZE

38 (

INC

H)

NO

M S

IZE

38 (

MM

)

1"-

11

12N

PT

1"-

11

12N

PT

34"-

14N

PT

34"-

14N

PT

12"-

14N

PT

12"-

14N

PT

38"-

18N

PT

38"-

18N

PT

1.3

15±.0

03

33.4

0±.0

8

1.0

50±.0

03

26.6

7±.0

8

.840±.0

03

21.3

4±.0

8

.675±.0

03

17.1

5±.0

8

.500

12.7

.375

9.5

3

.375

9.5

3

.313

7.9

5

.063

1.6

0

.063

1.6

0

.063

1.6

0

.063

1.6

0

1.5

00

38.1

0

1.2

50

31.7

5

1.0

00

25.4

0

.750

19.0

5

.188

4.7

8

.188

4.7

8

.125

3.1

8

.125

3.1

8

.53±.0

3

13.5

±.8

.53±.0

3

13.5

±.8

.53±.0

3

13.5

±.8

.53±.0

3

13.5

±.8

HE

X, D

5 A

CR

FLA

TS

#12-2

8U

NF

-2B

ØD

2

D7

6X

D4x45°

D1

PIP

E T

HR

EA

D

PE

R A

SM

E B

1.2

0.1

D3

D6

ET

CH

LE

TT

ER

S "

ZD

M"

AN

D N

OM

SIZ

E


MIL-DTL-18001L

41

FIGURE 28. Zinc, mooring chain anodes (pipe core), type ZMP.

D7

FIGURE A-26. Zinc, mooring chain anodes (pipe core) type ZMP.

SK

ET

CH

K1:

MO

OR

ING

CH

AIN

AN

OD

ES

(PIP

E C

OR

E O

R P

IPE

BU

SH

ING

CO

RE

) T

YP

E Z

MP

1.

SE

E D

IME

NS

ION

S O

N S

KE

TC

H N

2.

2.

FO

R U

SE

ON

GR

AD

E F

M3 S

TU

D L

INK

CH

AIN

.

3.

EX

TE

RIO

R E

DG

ES

AN

D C

OR

NE

R R

AD

II O

F C

AS

T A

NO

DE

SH

ALL

BE

0.0

6 T

O 0

.19.

4.

PIP

E C

OR

E S

HA

LL

BE

9/1

6 IN

CH

TU

BIN

G X

0.0

83 W

ALL

CO

NF

OR

MIN

G T

O A

ST

M A

513, T

YP

E S

OR

3/8

ST

AN

DA

RD

SIZ

E P

IPE

CO

NF

OR

MIN

G T

O A

ST

M A

53/5

3M

GR

OO

VE

D,

SE

RR

AT

ED

,

OR

TH

RE

AD

ED

LE

TT

ER

ING

ON

EX

PO

SE

D

FA

CE

, S

HO

W A

CT

UA

L N

OM

SIZ

E.

2X

D4

R.1

2±.0

6"

(R6

±3

MM

)

TY

P

D6

Ø.4

23

" A

ST

M A

53

Ø1

0M

M B

S-E

N-1

03

05

-1

D2

D1 2

D1

CA

ST

AN

OD

E

D2 2

Ø.6

75

AS

TM

A53

Ø1

6M

M B

S-E

N-1

03

05

-1

ST

EE

L C

OR

E

2X

D5

D3


MIL-

DTL

-

1222

K

DRA

FT

DAT

ED

29

Marc

h

2010

42

MIL-

DTL

-

1222

K

DRA

FT

DAT

ED

29

Marc

h

2010

MIL-

STD-

777F

(SH)

MIL-

STD-

777F

(SH)

MIL-

STD-

777F

(SH)

MIL-

STD-

777F

(SH)

MIL

-DT

L-1

80

01

L

MOORING CHAIN ANODE DIMENSIONS

NOM

chain

size

D1

(inch)

±0.12

D1

(mm)

±3.0

D2

(inch)

±0.06

D2

(mm)

±1.5

D3

(inch)

+0/-0.12

D3

(mm)

+0/-3.0

D4

(inch)

±0.06

D4

(mm)

±1.5

D5

(inch)

±0.06

D5

(mm)

±1.5

D6

(inch)

+0.06/-0

D6

(mm)

+1.5/-0

D7

(inch)

D7

(mm)

Approx

wt (lb)

Approx

wt (kg)

1¼ 2.5 63.50 1.19 30.23 0.12 3.05 0.5 12.70 0.12 3.05 0.58 14.73 0.06 1.52 0.28 0.13

1¾ 3.24 82.30 1.5 38.10 0.12 3.05 0.62 15.75 0.38 9.65 0.91 23.11 0.06 1.52 0.79 0.36

2 3.5 88.90 1.62 41.15 0.12 3.05 0.75 19.05 0.37 9.40 1.08 27.43 0.06 1.52 1.09 0.50

2¼ 3.5 88.90 1.75 44.45 0.3 7.62 0.75 19.05 0.37 9.40 1.2 30.48 0.09 2.29 1.38 0.62

2½ 3.5 88.90 1.94 49.28 0.3 7.62 0.75 19.05 0.5 12.70 1.33 33.78 0.09 2.29 1.69 0.77

2¾ 4 101.60 2.06 52.32 0.34 8.64 1 25.40 0.5 12.70 1.56 39.62 0.09 2.29 2.04 0.92

3 4.5 114.30 2.25 57.15 0.34 8.64 1.25 31.75 0.5 12.70 1.56 39.62 0.12 3.05 2.49 1.13

3½ 5.5 139.70 2.38 60.45 0.38 9.65 1.75 44.45 0.5 12.70 1.75 44.45 0.12 3.05 3.58 1.62

4 6 152.40 2.69 68.33 0.5 12.70 2 50.80 0.5 12.70 1.88 47.75 0.12 3.05 4.41 2.00

SKETCH K2: MOORING CHAIN ANODES (PIPE CORE) TYPE ZMP

1. See node views on sketch K1.

FIGURE 28. Zinc, mooring chain anodes (pipe core or pipe bushing core), type ZMP – Continued.


MIL-DTL-18001L

43

FIGURE 29. Zinc plate shape (no core), type ZPN (0.50" thick).

SK

ET

CH

M1

: P

LA

TE

SH

AP

E (

NO

CO

RE

), T

YP

E Z

PN

,

0.5

0" T

HIC

KM

INIM

UM

WE

IGH

T =

14

8 L

B /

67

KG

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

48.0

0±.2

5

24.0

0±.2

5

.50

±.0

6

1219

±6

.4

609.6

±6.4

12.7

±1

.5

FIGURE 27. Zinc plate shape (no core) type ZPN (0.50" thick).

D2 D3

D1


MIL-DTL-18001L

44

FIGURE 30. Zinc plate shape (no core), type ZPN (1.00" thick)

SK

ET

CH

M2

: P

LA

TE

SH

AP

E (

NO

CO

RE

), T

YP

E Z

PN

,

1.0

0" T

HIC

KM

INIM

UM

WE

IGH

T =

296 L

B / 1

34 K

G

DIM

IMP

ER

IAL

(IN

CH

)

ME

TR

IC

(MM

)

TA

BL

E O

F D

IME

NS

ION

S

D1

D2

D3

48

.00±.2

5

24

.00±.2

5

1.0

0±.1

3

12

19±6

.4

60

9.6

±6.4

25

.4±3.3

FIGURE 28. Zinc plate shape (no core) type ZPN (1.00" thick).

D2 D3

D1


MIL-DTL-18001L

45

Custodians: Preparing activity:

Army – AT Navy – SH

Navy – SH (Project 5342-2011-001)

Air Force – 99

Review activities:

Army – CR4

Navy – CE, OS, YD

Air Force – 71

DLA – IS

NOTE: The activities listed above were interested in this document as of the date of this document. Since

organizations and responsibilities can change, you should verify the currency of the information above using the

ASSIST Online database at https://assist.dla.mil.


https://assist.dla.mil/