wecall catalog

8/14/2019 Wecall Catalog

1/20

STRUCTURAL FASTENING SOLUTIONS


2/20

Structural Fasteningtructural FasteningSolutionsolutionsStructural FasteningSolutions

Clevises . . . . . . . . . . . . . . . . 2

Clevis Pins . . . . . . . . . . . . . . 4

Turnbuckles . . . . . . . . . . . . . 6

Coupling Nuts . . . . . . . . . . . 8

Sleeve Nuts . . . . . . . . . . . . 10

Heavy Hex Nuts . . . . . . . . 12

Pins w. Recess Nuts . . . . 14

Specialty Products. . . . . . 16

ContentsWecall is uniquely positioned to help you solve your toughest

structural fastening problems. We combine high quality

materials, extensive application knowledge and expert

manufacturing to create fastening products for structural

steel and other heavy industrial uses. We understand the

challenging work conditions of the construction industry and

we are able to respond quickly to assure the success of your

project. Our product line includes a wide range of standard

and custom fasteners:

Clevises, forged from carbon and stainless steel in a wide

range of sizes and machined to your requirements

Sleeve and coupling nuts in low carbon, high strength and

stainless steel materials

Headed and straight pins for clevises and other structural

connections

Pins with recess nuts and other large bearing pins

Heavy hex nuts in larger sizes and with left hand, metric

and other special thread forms

Large turnbuckle assemblies for rigging and other critical

applications

Machined and fabricated jaw, eye and clevis fittings

Custom structural fasteners specifically designed to suit

your application.


3/20

1

EXPERIENCE, KNOWLEDGE & CUSTOMER FOCUS

Wecall fasteners are in use throughout the United States and

around the world to hold up bridges, hold down buildings

and hold together thousands of tons of structural steel and

machinery. Our products are used in both new construction

and in the renovation of existing structures.

We have a thorough understanding of the many specifications

that govern the fastener and steel construction industries,

as well as the testing and reporting requirements that assure

product conformance.

We are dedicated to helping our customers solve their struc-

tural fastening needs by understanding their applications andthen using our experience, engineering skills and machining

expertise to create cost effective products to meet those

needs. Helping customers resolve unusual fastening problems

and job site emergencies is part of our everyday routine.

FLEXIBLE MANUFACTURING

Most of our products can be specified in a wide variety of con-

figurations, so our manufacturing strategy is oriented toward

make to order and fast turnaround times. Our manufacturing

methods are designed to allow us to respond quickly with

parts that meet your requirements exactly.

MADE IN THE USA

All of our manufacturing takes place in the United States. All

of the forgings and plate products that we use are produced

from domestic melted and manufactured steel. Most of the

bar materials that we purchase are domestic as well, although

availability issues occasionally oblige us to buy foreign stock.

If domestic certification is a requirement for your project,

please let us know at the time you place your order.

COMMITMENT TO CONTINUOUS IMPROVEMENT

We understand that our success is entirely dependent on our

ability to deliver an ever increasing level of value to our cus-

tomers. We work towards this goal every day by paying close

attention to what our customers are saying and by creating an

environment for our staff that encourages innovation and a

can do attitude.


4/20

APPLICATIONS

Wecall clevises are used to connect tie rods and hanger assem-

blies to structural steel or fabricated lugs. The pin connection

ensures that the rod is loaded only in tension and sees no

bending forces. Our clevises are widely used in structural steel

bracing and pipe support applications.

Length adjustment of rod assemblies can be provided by

pairing RH and LH threaded clevises with single lengths of rod

or by using RH threads on both clevises with two rods and a

turnbuckle or sleeve nut.

Length adjustment: 2x rod diameter

Length adjustment: 312,

depending on turnbuckle or sleeve nut used

RELEVANT STANDARDS

Wecall clevises are manufactured to meet the dimensions

and load ratings shown in the American Institute of Steel

Construction (AISC) Manual of Steel Construction, 9th edition,

page 4-148. Carbon and alloy steel clevises are forged per

ASTM A668. Stainless clevises are forged per ASTM A473.

MAXIMUM MAXIMUM EYE NUT THROAT LEG LEG SAFE TYPICAL

CLEVIS TAP SIZE PIN SIZE DIAMETER THICKNESS DEPTH WIDTH THICKNESS WORKING WEIGHT W.

NUMBER U P D N A W T LOAD (lbs ) PIN (lbs)

Table 1: Clevis Dimensions (dimensions in inches)

2 58 34 1 71 6 58 3 78 1 11 6 516 3,500 1.5

2 12 78 1 12 2 12 1 18 4 1 14 516 7,500 2.5

3 1 38 1 34 3 1 51 6 5 1 12 12 15,000 5.0

3 12 1 12 2 3 12 1 58 6 1 34 12 18,000 8.0

4 1 34 2 14 4 1 34 6 2 12 21,000 11.0

5 2 2 12 5 2 14 7 2 12 58 37,500 21.0

6 2 12 3 6 2 34 8 3 34 54,000 32.0

7 3 3 34 7 3 9 3 12 78 68,500 53.0

P D

AN

U W

T

GRIP

T

CleviseslevisesClevises

LHRH

RHRH LH RH

2


5/20

MATERIALS

Wecall stocks clevis forgings in C1035 steel, ASTM A668 Class A,

and 316 stainless steel, ASTM A473 Designation A. Heat-treated

carbon and alloy steel clevises available by special order.

FINISHES

Standard finish for carbon steel clevises is plain steel, shot

blasted after forging. Hot dip galvanizing is available as well as

zinc electroplating. Standard processing for stainless steelclevises after forging is pickling and passivation. An electro-

polished finish is also available for stainless steel parts.

THREADS

Standard threads are UNC 2B, with the UNF thread series and

metric M profile also available. We can also provide clevises

with pipe threads for non-structural applications. Hot dip gal-

vanized clevises are normally tapped oversize after galvanizing

to accommodated the zinc coating on the rod threads.

NOTES REGARDING STRENGTH

The AISC safe working load listed in Table 1 is based on the net

tensile area through the maximum pin hole, 60,000 Psi ultimate

tensile strength material and a 5:1 safety factor.

The allowable pin and tap size combinations in Table 2 are

based on maintaining a net tensile stress area though the pin

hole at 125% of the UNC tensile stress area of the rod.

All of the pin diameters shown in Table 2 will likewise exceed

the corresponding rod strength based on shear, but they should

be investigated for bending if large grips are used (greater

than 1 12") and there is a significant difference between the

material thickness and the grip size (greater than 12").

The threaded area of carbon steel clevises forged to ASTM A668

Class A is equivalent to an ASTM A563 Grade C heavy hex nut.

For high-strength applications, our carbon steel clevises can be

heat treated up through ASTM A668 Class F.

PINS

Standard pin material is carbon steel with 50 Ksi minimum yield

strength. Pins are available in headed or straight configura-

tions. We normally supply1

2

" through 1" sizes as headed pinsand 1 18" and larger as straight pins, although both styles are

available throughout the full range of sizes. See pages 45 for

more information on clevis pins.

SPECIFYING AND ORDERING CLEVISES

Determine clevis number based on safe working load and rod

size using the Table 1. Your applications maximum load should be

less than or equal to value shown in Safe Working Load column

and your rod size should be less than or equal to number shown

in Maximum Tap Size column. If not, select a larger size clevis.

Select pin diameter using Table 2 by locating your rod (tap)

size in the first column, then moving across that row to

find your clevis size. The allowable pin diameters are listed atthe top of each column where your clevis number appears.

Determine grip size based on the thickness of the material

that will receive the pin. The grip size is normally specified as

material thickness + 14", however the minimum grip for #2

through #5 clevises is 34" and 1" for #6 and #7 clevises. Grip

dimensions are normally called out in 14" increments.

Specify the desired finish (typically plain or HDG) and any

other special requirements.

PIN DIAMETER P

12 58 34 78 1 114 112 134 2 214 212 234 3 314 312

Table 2: Allowable Pin and Tap Size Combinations

TAP SIZE

U

38 2 2 2

12 2 2 2

58 2 2 2 2 12 2 12 2 12 2 12

34 2 12 2 12 2 12 2 12 2 1278 2 12 2 12 2 12 2 12 3

1 3 3 3 3

1 18 3 3 3 3 3 12

1 14 3 3 3 3 3 12

1 38 3 3 3 3 12 3 12 4

1 12 3 12 3 12 4 4 5

1 58 4 4 4 5 5 5

1 34 4 4 5 5 5 5

1 78 5 5 5 5 5

2 5 5 5 5 5 6 6

2 14 6 6 6 6 6 7 7

2 12 6 6 6 7 7 7 7

2 34 7 7 7 7

3 7

3


6/20

APPLICATIONS

Pin connections are a cost effective method of connecting twostructural members which are subjected to simple tension loads.

They make possible straightforward and rapid field installation

of bracing and support members. Because pin connections

normally do not clamp the connected members, they are gen-

erally only recommended for use in connections where they

are loaded in double shear.

Double shear and single shear connections

RELEVANT STANDARDS

The America Institute of Steel Construction (AISC) Manual ofSteel Construction, 9th edition defines basic dimensions for

both headed and straight clevis pins used in structural applica-

tions. The AISC manual identifies headed pins as vertical pins

and straight pins as horizontal pins, implying that headed

pins should be used in applications where the long axis of the

pin is oriented vertically. In these applications, a straight pin

could fall out of the connection if the cotter pin was improperly

installed or failed due to corrosion.

ANSI/ASME B18.8.1 defines dimensions and tolerances for

small cold formed clevis pins for use in machines and linkages.

This specification covers sizes from 316" through 1" diameter.

MATERIALS

Smaller headed pins are produced from cold headed low

carbon steel wire. Straight pins and larger headed pins (1 14"

diameter and up) are machined from ASTM A108 Grade 1117

bar stock. Other available materials for machined pins

include 1045, 4140, A36, A572/A588, A193 Grade B7, A668

and various stainless grades.

FINISHES

Smaller headed and straight pins are normally supplied with a

plain, cold drawn mill finish. Larger pins which are made from

4

H D

E

E

D

Clevis Pinslevis PinsClevis Pins


7/20

hot rolled or forged bars are machined to produce an ANSI 125

finish on the bearing diameter. Hot dip galvanized and zinc

electroplating coatings are available for corrosion protection.

DIMENSIONS

Refer to the table for basic dimensions of standard Wecall clevis

pins. An additional dimension, 'W' is determined as shown

below and is normally specified in 14" increments. Assembly

environment, coatings and thickness tolerances should all be

considered when determining the fit-up allowance. The mini-

mum recommended value is 14".

Cotter Hole Spacing for Straight Pins

Cotter Hole Spacing for Headed Pins

COTTER PINS

Headed and straight pins are normally supplied with extended

prong steel cotter pins with a zinc plated finish. Other cotter

pin styles and materials are available.

OTHER OPTIONS

Headed pins are occasionally specified with a shouldered,

threaded end and a mating nut. Plate washers or recess nuts

can be used in conjunction with these designs to provide

grip adjustment. Metric sizes and other variations from the

standard dimensions are also available.

5

PIN HEAD HEAD COTTER HOLE COTTER HOLE

DIAMETER DIAMETER THICKNESS COTTER DIAMETER SETBACK

D H T SIZE C E

12 58 532 18 532 532

58 1 1364 18 532 532

34 1516 14 18 532 38

78 1 132 516 18 532 38

1 1 316 1132 18 532 38

1 18 1 12 38 14 51 6 12

1 14 1 12 38 14 51 6 12

1 38 1 34 38 14 51 6 12

1 12 1 34 38 14 51 6 12

1 58 2 38 14 51 6 12

1 34 2 38 14 51 6 12

1 78 2 14 38 14 51 6 12

2 238 38 14 51 6 12

2 14 258 38 38 1332 12

2 12 278 38 38 1332 12

234 3 18 38 38 1332 12

3 3 12 12 12 1732 1

3 14 334 12 12 1732 1

3 12 4 12 12 1732 1

3 34 4 14 12 12 1732 1

4 4 12 12 12 1732 1

4 12 5 12 12 1732 1

5 5 12 12 12 1732 1

HEADED PINS ONLY (dimensions in inches)

W

C

Max. MaterialThickness (G)

W

C

Max. MaterialThickness (G)

W= G + C/2 + F IT-UP ALLOWANCE

W= G + C + F IT-UP ALLOWANCE


8/20

6

D G

AN

C

TurnbucklesurnbucklesTurnbuckles

APPLICATIONS

Turnbuckles are used to provide length and tension adjust-

ment of tie rods and hanger assemblies. They are widely used

in structural steel bracing and pipe support applications.

Typical turnbuckle application

RELEVANT STANDARDS

Our forged turnbuckle bodies are manufactured to meet Fed-

eral Spec. FF-T-791b, Type 1, Form 1 Class 2 (superceded by

ASTM F1145, Type 1, Grade 1 Class B). They also meet the

dimensions and load ratings shown in the American Institute

of Steel Construction (AISC) Manual of Steel Construction, 9th

edition, page 4-149.

MATERIALS

Wecall stocks turnbuckle bodies in C1035 steel, forged and

normalized in accordance with ASTM A668 Class C. Heat-

treated carbon steel turnbuckle bodies and stainless steel

turnbuckle bodies are available by special order.

FINISHES

Standard finish is plain steel, shot blasted after forging. Hot

dip galvanizing is available as well as zinc electroplating.

THREADS

Standard threads are UNC 2B, RH/LH, with other thread series

and profiles also available by special order. Hot dip galvanized

turnbuckles are normally tapped oversize after galvanizing to

accommodate the zinc coating on the rod threads.


9/20

7

THREAD TAKEUP NUT OVERALL BODY SAFE WEIGHT

DIAMETER LENGTH LENGTH LENGTH WIDTH WORKING LOAD, EACH,

D A N C G LBS. LBS.

Turnbuckle Dimensions (dimensions in inches)

38 6 58 7 14 1 132 1,200 0.4

12 6 34 7 12 1 516 2,200 0.8

12 12 34 13 12 1 516 2,200 1.3

5

8 615

16 77

8 117

32 3,500 1.058 12 1516 13 78 1 1732 3,500 1.7

34 6 1 18 8 14 1 2532 5,200 1.5

34 12 1 18 14 14 1 2532 5,200 2.5

78 6 1 51 6 8 58 1 78 7,200 1.6

78 12 1 51 6 14 58 1 78 7,200 3.4

1 6 1 38 8 34 2 132 10,000 2.0

1 12 1 12 15 2 132 10,000 4.6

1 18 6 1 34 9 12 2 1732 15,200 3.8

1 14 6 1 34 9 12 2 1732 15,200 3.5

1 38 6 1 78 9 34 2 34 21,400 6.0

1 12 6 1 78 9 34 3 132 21,400 5.8

1 58 6 2 716 10 34 3 916 27,600 9.8

1 34 6 2 716 10 34 3 916 27,600 9.5

1 78 6 2 916 1 1 18 4 34,500 13.4

2 6 2 916 1 1 18 4 34,500 13.0

2 14 6 3 38 13 12 4 58 48,000 23.5

2 12 6 3 38 13 12 5 60,000 23.5

DIMENSIONS

Refer to the table above for turnbuckle body dimensions. Note

that for the 2 14" and 2 12" sizes, the nut area is round instead

of hex-shaped.

Turnbuckle with hexagonal ends

Turnbuckle with round ends

FITTINGS

Left and right hand stub end fittings are also available. Dimen-

sions for these components are available upon request.


ASTM F1145 and Federal Specification FF-T-791b tabulate therecommended working loads and minimum breaking strengths

for each size of turnbuckle body. Our turnbuckles meet the

slightly higher safe working loads listed in the table which are

taken from the AISC Manual of Steel Construction. These safe

working loads are based on safety factor of 5:1.

From a thread strength standpoint, the nut area of carbon

steel turnbuckle bodies forged to ASTM A668 Class C is

roughly equivalent to an ASTM A563 Grade C heavy hex

nut. For applications where high strength rods are specified

and ASTM A563 Grade DH or ASTM A194 Grade 2H nuts

would normally be used, sleeve nuts should be considerd in

place of turnbuckles. Sleeve nuts can be manufactured to

meet all of the strength requirements of the ASTM nutspecifications and will allow the full strength of the rod to

be exploited.

SPECIFYING AND ORDERING TURNBUCKLE BODIES

Determine turnbuckle thread size based on safe working

load and rod diameter using the table above. Also select take

up length for sizes 1" and under.

Specify the desired finish (typically plain or HDG) and any

other special requirements.


10/20

8

Coupling Nutsoupling NutsCoupling Nuts

APPLICATIONS

Coupling nuts are used to make up long tie rod assemblies

from shorter lengths of rod and to facilitate assembly of twofasteners or fittings which both have external threads.

RELEVANT STANDARDS

Coupling nut dimensions are described by the Industrial Fas-

teners Institute in standard IFI-128. Chemical and mechanical

properties are controlled in conformance with ASTM and SAE

nut specifications (ASTM A563, ASTM A194 and SAE J995).

MATERIALS

Standard coupling nuts are produced from ASTM A108 grade

12L14 hexagon or round bars with 50 Ksi minimum yield strength.

Other available materials include 1045, 4140, structural grades

and stainless steels.

FINISHES

Standard finish is plain with either a cold drawn or hot rolled

mill finish, depending on the type of bar stock used. Hot dip

galvanizing is available as well as zinc electroplating.

THREADS

Standard threads are UNC 2B, RH, with other thread series and

profiles available by special order. Hot dip galvanized coupling

nuts are normally tapped oversize after galvanizing to accom-

modate the zinc coating on the rod threads. Coupling nuts up

to 2 14" thread size are tapped all the way through from one

end, allowing them to be completely threaded on to one of the

members which are to be coupled, a feature that is requiredfor certain assembly situations. Coupling nuts larger than 2 14"

thread size cannot be tapped all the way through without spe-

cial extended length taps and are therefore furnished with

RH/RH threads (tapped to a depth of L/2 from each end)

unless specifically ordered as threaded all the way through.

Coupling nuts can also be threaded with two different thread

sizes or profiles. These parts are normally identified as

Reducing Coupling Nuts.

Cross section of reducing coupling nut

DIMENSIONS

Refer to the table for coupling nut dimensions. Some of the

sizes listed in this table have an Across Flats Size slightly

larger than that called for by IF-128 due to commercial avail-

D G

L

F


11/20

9

ability of hexagon bar stock. Because of limited availability of

hex stock larger than 3 12", coupling nuts with thread sizes

21

2

" and larger are usually made from round bar. These largerparts can be provided with milled wrench flats or a milled hex.

Round coupling nut with wrench flats

Round coupling nut with hex center


Standard coupling nuts meet the chemical and mechanical

requirements of ASTM A563 grade A.

When high strength rods are specified, coupling nuts produced

to meet ASTM A563 grade DH and A194 grade 2H or grade 7

can be provided. These parts will meet all of the chemical and

mechanical properties called for in those specifications.

In order to meet the above strength requirements, the rods

must be threaded into the coupling nut for a distance equal to

or greater than the nominal thread diameter.

The IFI-128 specification describes an optional cross hole located

at L/2, (also known as a sight hole) which allows visual verifi-

cation that the threads are fully engaged.

Coupling nut with sight hole

THREAD ACROSS ACROSS

DIAMETER FLATS POINTS LENGTH WEIGHT

D SIZE F SIZE G L EACH

Coupling Nut Dimensions (dimensions in inches)

12 34 78 1 12 0.12

58 1 1 18 1 78 0.30

34 1 18 1 51 6 2 14 0.42

78 1 516 1 71 6 2 58 0.561 1 12 1 34 3 0.99

1 18 1 58 1 78 3 38 1.23

1 14 1 78 2 31 6 3 34 1.93

1 38 2 2 51 6 4 18 2.31

1 12 2 14 2 58 4 12 3.33

1 58 2 34 3 31 6 4 78 6.17

1 34 2 34 3 31 6 5 14 6.16

1 78 3 3 71 6 5 58 8.01

2 3 14 3 71 6 6 7.9

2 14 3 12 4 11 6 6 34 12.7

2 12 3 78 4 12 7 12 17.2

2 34 4 14 4 1 51 6 8 14 22.7

3 4 58 5 51 6 9 29.2

3 14 5 5 34 9 34 36.8

3 12 5 38 6 31 6 10 12 45.8

3 34 5 34 6 58 11 14 56.0

4 6 18 7 11 6 12 68

4 12 6 78 7 1 51 6 13 12 96

5 7 58 8 1 31 6 15 130


12/20

10

Sleeve Nutsleeve NutsSleeve Nuts

APPLICATIONS

Sleeve nuts are used to couple tie rods and provide a limited

degree of length adjustment (typically 4 to 5 inches). Theyare often used in place of turnbuckles when high strength rods

are specified.

RELEVANT STANDARDS

Sleeve nut dimensions are shown in the American Institute

of Steel Construction (AISC) Manual of Steel Construction,

9th edition, page 4-150. When requested, we can also

certify chemical and mechanical properties to ASTM nut

specifications (A563 or A194).

MATERIALS

Standard sleeve nuts are produced from ASTM A108 grade 12L14

hexagon or round bars with 50 Ksi minimum yield strength.

Other available materials include 1045, 4140, structural gradesand stainless steels.

FINISHES

Standard finish is plain with either a cold drawn or hot rolled

mill finish, depending on the type of bar stock used. Hot dip

galvanizing is available as well as zinc electroplating.

THREADS

Standard threads are UNC 2B, RH/LH, with other thread series

and profiles available by special order. Hot dip galvanized

sleeve nuts are normally tapped oversize after galvanizing to

accommodated the zinc coating on the rod threads. Sleeve

nuts are also frequently threaded RH/RH for use as extra longcoupling nuts. Standard parts are tapped from each end to a

depth of L/2, so that rods may be threaded all the way to the

center of the nut. If the overall length of the sleeve nut prohibits

tapping to a depth of L/2, the center of the nut can be relieved

on thread sizes 3" and larger, as shown below.

Cross section showing internal thread relief

DIMENSIONS

Refer to the table for sleeve nut dimensions. Some of the sizes

listed in this table have an Across Flats Size slightly larger

than that called for by AISC due to commercial availability of

hexagon bar stock. Because of limited availability of hex bar

stock larger than 3 12", sleeve nuts with thread sizes 2 12" and

larger are usually made from round bar. These larger parts can

D

F

L

Internal

relief


13/20

11

be provided with milled wrench flats or a milled hex. Tapered

ends can also be provided, as shown in the AISC manual.

Round sleeve nut with wrench flats

Round sleeve nut with hex center

Sleeve nut with tapered ends


As noted in the AISC Manual of Steel Construction, sleeve nuts

will be stronger than their corresponding connecting rods when

made from the same material. Because hex stock is not produced

in the structural grades used for tie rods, our standard hex sleevenuts are produced from steel with 50Ksi minimum yield strength

to ensure compatibility with both grade 36 and grade 50 rods.

These parts can also be certified to ASTM A563 grade A.

When high strength rods are specified, sleeve nuts produced to

meet ASTM A563 grade DH and A194 grade 2H and grade 7 can

be provided. These parts will meet all chemical and mechanical

properties called for in those specifications. In order to meet

these strength requirements, the rods must be threaded into the

sleeve nut for a distance equal to or greater than the thread size.

THREAD ACROSS ACROSS WEIGHT

DIAMETER FLATS SIZE POINTS SIZE LENGTH EACH

D F G L (lbs)

Sleeve Nut Dimensions (dimensions in inches)

12 78 1 4 0.53

58 1 18 1 516 5 1.12

34 1 14 1 716 5 1.29

78 1 12 1 34 7 2.671 1 58 1 78 7 2.97

1 18 1 78 2 316 7 12 4.35

1 14 2 2 516 7 12 4.75

1 38 2 14 2 58 8 6.56

1 12 2 38 2 34 8 7.06

1 58 2 58 3 116 8 12 9.37

1 34 2 34 3 316 8 12 9.97

1 78 3 3 716 9 12.82

2 3 14 3 58 9 13.5

2 14 3 12 4 116 9 12 17.8

2 12 3 78 4 12 10 22.9

2 34 4 14 4 1516 10 12 28.8

3 4 58 5 516 11 35.7

3 14 5 5 34 11 12 43.5

3 12 5 38 6 316 12 52.3

3 34 5 34 6 58 12 12 62.2

4 6 18 7 116 13 73

4 12 6 78 7 1516 14 99

5 7 58 8 1316 15 130


14/20

Heavy Hex Nutseavy Hex NutsHeavy Hex NutsD G

H

F

H1approx.

164"

12

APPLICATIONSHeavy hex nuts are specified for use with bolts or studs hav-

ing any of the following characteristics; higher strength, zinc

coatings or nominal thread size larger than 1 12".

RELEVANT STANDARDS

Heavy hex nuts, as defined in ANSI B18.2.2 are greater in width

and thickness than standard hex nuts. ASTM A563 is the most

commonly referenced ASTM specification for carbon and alloy

steel nuts. It includes 8 grades and covers sizes from 14" to 4".

ASTM A194 covers carbon and alloy steel nuts that are intended

for use in high pressure and/or high temperature applications.

It also covers sizes from 14" to 4" and includes dozens of

grades. SAE J995 is another frequently referenced specifica-

tion for carbon and alloy steel nuts. It covers sizes from 14" to1 12" and includes three grades.

The geometry, dimensions and tolerances for Unified Inch

screw threads are defined in ANSI B1.1. This specification

includes information for UNC, UNF, UNEF and constant pitch

(4UN, 6UN, 8UN etc.) threads.

Selecting the appropriate nut for an application is straightforward

if the mating bolt or stud was produced to an ASTM standard.

Table 2 at right is a summary of the ASTM recommendations.

SPECIAL CONSIDERATIONSDue to their wide availability in certain sizes, ASTM A194 Grades 2

and 2H nuts are frequently used in applications that are neither

high pressure nor high temperature. However, if there is some

feature of the nut which makes it a special or non-stock item,

it is generally more economical to specify ASTM A563 Grades

A or DH, unless the application actually involves high tempera-

tures and/or pressures. Likewise, the ASTM A563 grades are

preferred over those of SAE J995 for small lot sizes and larg-

er thread sizes. A563 Grades A, C and DH meet or exceed the

strength requirements of J995 grades 2, 5 and 8, respectively.

Notes for Nut Selection Table 2

A: Nuts of other grades and styles in ASTM A563 having specified proof

load stresses greater than the grade and style of nut listed are also suitable.

B: For nut selection purposes, fasteners with coatings that are not thick

enough to require over-size tapped nuts are considered to be plain.

C: For nut selection purposes, fasteners with any coating thick enough to

require over-size tapped nuts are considered to be zinc coated.

D: These fasteners are not normally supplied zinc coated due to risk of

hydrogen embrittlement.

E: Nuts of other grades and styles listed in ASTM A563 or A194 with proof

load stress equal or greater than the minimum tensile strength of the anchor

bolt are also suitable.


15/20

THREAD WIDTH WIDTH THICKNESS THICKNESS HEAVY HEX NUTS HEAVY HEX JAM

DIAMETER ACROSS FLATS ACROSS POINTS HEAVY HEX NUTS HEAVY HEX JAM WEIGHT EACH, NUTS WEIGHT

D F G H NUTS H1 LBS. EACH, LBS.

Table 1: Heavy Hex Nut Dimensions (dimensions in inches)

1 1 58 1 78 6364 3564 0.4 0.2

1 18 1 78 2 316 1 764 3964 0.6 0.4

1 14 2 2 516 1 732 2332 0.8 0.5

13

8 21

4 25

8 111

3225

32 1.1 0.61 12 2 38 2 34 1 1532 2732 1.3 0.7

1 58 2 58 3 116 1 1932 2932 1.8 1.0

1 34 2 34 3 316 1 2332 3132 2.0 1.1

1 78 3 3 716 1 2732 1 132 2.6 1.5

2 3 18 3 58 1 3132 1 332 3.0 1.6

2 14 3 12 4 116 2 1364 1 1364 4.1 2.3

2 12 3 78 4 12 2 2964 1 2964 5.6 3.3

2 34 4 14 4 1516 2 4564 1 3764 7.4 4.3

3 4 58 5 516 2 6164 1 4564 9.6 5.5

3 14 5 5 34 3 316 1 1316 12.0 6.8

3 12 5 38 6 316 3 716 1 1516 15.0 8.4

3 34 5 34 6 58 3 1116 2 116 18.0 10.0

4 6 18 7 116 3 1516 2 316 22.0 12.0

4 12 6 78 7 1516 4 716 2 716 31.0 17.0

5 7 58 8 1316 4 1516 2 1116 43.0 23.0

13

B O L T O R S T U D N U T

ASTM GRADE OR SUITABLE GRADES SUITABLE NUT NOTES

SPEC TYPE DESCRIPTION SIZE COATING ASTM A563 STYLE (See pg. 12)

Table 2: Heavy Hex Nut Selection Guidelines (dimensions in inches)

A307 Grade A or C Bolts and Studs14 to 1 12 Plain, Zinc A Hex

1 12 to 4 Plain, Zinc A Heavy Hex

A307 Grade B Bolts and Studs 14 to 4 Plain, Zinc A Heavy Hex

A325 Type 1 Structural Bolts12 to 1 12 Plain C, C3, D, DH, DH3 Heavy Hex A

12 to 1 12 Zinc DH Heavy Hex A

A325 Type 3 Structural Bolts 12 to 1 12 Plain C3, DH3 Heavy Hex A

A354 Grade BC Bolts and Studs14 to 4 Plain C Heavy Hex A, B

14 to 4 Zinc DH Heavy Hex A, B

A354 Grade BD Bolts and Studs 14 to 4 Plain DH Heavy Hex A, C, D

A449 Type 1 or 2 Bolts and Studs

14 to 1 12 Plain B Hex A, B

over 1 12 to 3 Plain A Heavy Hex A, B

14 to 3 Zinc DH Heavy Hex A, C

A490 Type 1 or 2 Structural Bolts1

2 to 11

2 Plain DH, DH3 Heavy Hex DA490 Type 3 Structural Bolts 12 to 1 12 Plain DH3 Heavy Hex D

F1554 Grade 36 Anchor Bolts14 to 1 12 Plain, Zinc A Hex E

over 1 12 to 4 Plain, Zinc A Heavy Hex E

F1554 Grade 55 Anchor Bolts

14 to 1 12 Plain A Hex E

over 1 12 to 4 Plain A Heavy Hex E

over 14 to 4 Zinc A Heavy Hex E

F1554 Grade 105 Anchor Bolts

14 to 1 12 Plain D Hex E

14 to 1 12 Zinc DH Heavy Hex E

14 to 3 Plain, Zinc DH Heavy Hex E


16/20

14

Pins & Recess Nutsins & Recess NutsPins & Recess Nuts

APPLICATIONS

Pins with recess nuts are used widely in structural steel appli-

cations for pin connections, hanger assemblies and bridge

bearings. Smaller sizes are often used with clevises in place of

standard straight pins with two cotters.

Pins with recess nuts offer several advantages over bolts for

bearing (shear) connections. The reduced threaded diameter

of the pin combined with the recess area of the nut allows grip

adjustment while ensuring that the threads are excluded

from the bearing area. Also, the reduced threaded diameter onthe pin helps to keep the threads free from damage while the

pin is being inserted into a close-fitting hole.

RELEVANT STANDARDS

Pin and recess dimensions are shown in the American Institute

of Steel Construction (AISC) Manual of Steel Construction,

9th edition, page 4-151. Chemical and mechanical properties of

the materials used will conform to any ASTM, AASHTO,

AERMA and or state DOT specifications identified at the time

the order is placed.

MATERIALS

Standard pins are produced from cold finished steel bars

conforming to ASTM A108 with 50 Ksi minimum yield

strength. Other available carbon and alloy steels include

ASTM A668 forged bars, ASTM A434 quenched and tempered

alloy steel bars, and ASTM A572 grade 50/50W bars.

Available stainless steels include gall resistant types such

as ASTM A276 UNS S21800 (Nitronic 60)and 304, 316 and

410 grades.

Standard nuts are produced from ASTM A36 plate or 12L14hex bar. Other available nut materials include ASTM A572

grade 50/50W plate, ASTM A668 forged bars and stainless

steel. Pins are also occasionally specified with ASTM A563

heavy hex nuts nut in A, C or DH grades.

FINISHES

Standard finish is plain with a cold drawn mill finish on the

bearing diameter. Hot rolled and forged bars are machined to

produce an ANSI 125 finish or better. Hot dip galvanized and

zinc electroplating coatings are available.

dD

C

Grip LengthL

L

T

AF

A

S

SECTION AA


17/20

15

THREADS

Standard threads are 6UN 2A/2B, with other thread series and

profiles available upon request.

DIMENSIONS

Refer to the table for standard pin and recess nut dimen-

sions. The grip length of the pin should be determined by

the maximum thickness of the materials which make up

the connection. The recess feature of the nuts compensates

for members whose thickness is on the low side of the

tolerance range. The recess also ensures that the chamferon the pins bearing diameter (dimension C) is excluded

from the grip and that the structural members have full

bearing on the pin.

Pins over 10 inches in diameter are often secured with cap

washers and a tie rod instead of recess nuts.

Large diameter pin with cap washers

ACCESSORIES AND OPTIONS

A wide range of washers are available, fabricated from carbon

steel, stainless steel, PTFE, neoprene and high density poly-

ethylene. Bushings can be provided in bronze, PTFE, or

composite materials. Link plates can be supplied for bridge

suspender applications.

Features can be provided for securing nuts in place. Cotter

pins are often used where maintaining a precise grip dimen-

sion is not critical, while set bolts allow the nuts to be locked

securely in the field after final grip adjustments are made.

Cotter pin and set bolt locking features

PILOT AND DRIVING NUTS

Pilot nuts and driving nuts are available to protect the pin

threads during field installation. Driving nuts have a domed end

and a shoulder which permits the pin to be driven to the proper

depth. Pilot nuts have a tapered nose which serves to align the

bearing members as the pin is driven home. Short pilots are

generally sufficient unless there are many plies in the connec-

tion or assembly conditions are difficult.

Pins with pilot and driving nuts

P I N N U T

PIN THREAD THREAD CHAMFER THICK- SHORT LONG RECESS RECESS APPROX.

DIAMETER DIAMETER LENGTH LENGTH NESS DIAMETER DIAMETER DIAMETER DEPTH WEIGHT

d D L C T F L R S LBS

Pin and Nut Dimensions (dimensions in inches)

2 2 14 1 12 1 18 78 3 3 38 2 58 14 1

2 12 2 34 2 1 18 18 1 3 58 4 18 3 18 14 2

3 3 14 3 12 2 12 1 14 18 1 18 4 38 5 3 78 38 3

3 34 4 3 1 38 14 1 14 4 78 5 58 4 38 38 4

4 14 4 12 4 34 3 12 1 12 14 1 38 5 34 6 58 5 14 12 6

5 5 14 4 1 58 14 1 12 6 14 7 14 5 34 12 7

5 12 5 34 6 4 12 1 34 14 1 58 7 8 18 6 12 58 9

6 14 6 12 5 1 78 38 1 34 7 58 8 58 7 58 12

6 34 7 5 12 2 38 1 78 8 18 9 38 7 14 34 14

7 14 7 12 5 12 2 38 1 78 8 58 10 8 34 16

7 34 8 8 14 6 2 14 38 2 18 9 38 10 78 8 34 34 22

8 12 8 34 9 6 2 14 38 2 18 10 14 1 1 78 9 58 34 28

9 14 9 12 6 2 38 38 2 14 11 14 13 10 58 34 39

9 34 10 6 2 38 38 2 14 11 14 13 10 58 34 39

ShortPilot

LongPilot


18/20

Shown here (counter-clockwise from left) are some examples

of Wecall custom industrial and construction products:

Pin and link assemblies for Illinois DOT highway bridges.

Assemblies include Nitronic 60 stainless steel pins, primed

jam nuts, PTFE lined bushings and pre-painted structural steel

link plates.

Clevis fittings machined from stainless steel bar stock for

use in an architecturally exposed bracing application.

Jaw fittings for 4" diameter turnbuckle assemblies,machined from medium carbon steel and hot dip galvanized.

Jaw and jaw turnbuckle assemblies, machined from 4140

alloy steel with 175,000 lb. safe working load, for use with 8"

wide synthetic slings.

Trunnion pins with recess nuts for an Ohio DOT bridge,

9" diameter x 56" overall length, machined from Nitronic 60

stainless steel.

We are especially proud of the many projects where Wecall

products were used to renovate historic structures.

16

The manufacturing processes that we use everyday to make

our standard product line are ideally suited to the productionof custom structural steel and other specialty fasteners.

Employing computer modeling tools and our extensive know-

ledge of fastener and steel construction specifications, we can

help you design a fastener that does exactly what your appli-

cation requires. Using computer-aided manufacturing software,

our expert machinists will produce your parts efficiently and

accurately. Testing, both destructive and non-destructive, will

confirm the strength and integrity of the finished product.

Specialty Productspecialty ProductsSpecialty Products


19/20

Nitronic is a registered trademark of Armco, Inc.

Our specialty services include design assistance and production

of customer and shop drawings, as well as procurement of

forgings, castings, bar and plate materials. We perform turning,

milling, threading and light welding in-house, and our location

affords excellent access to firms which provide precision

grinding, heat treating, plating, galvanizing, and painting. Also

readily available are world-class providers of end product eval-

uation and inspection services such as proof load, ultrasonic,

magnetic particle and dye penetrant testing. Our long-standing

relationships with our suppliers and subcontractors ensure

fast turnarounds and accurate results.

We welcome the opportunity to assist you with your custom

fastener applications.

CONTACT

For more information or to request

a quotation on your next project,

please contact us at:

Wecall Inc.

64 Penniman RoadPO Box 39

Orwell, OH 44076

Phone: 440.437.8202

Fax: 440.437.8208

Email: [email protected]

Note: The use and application of the prod-

ucts described in this catalog are the sole

responsibility of the end user or project

engineer. Clevis, turnbuckle, sleeve nut

and coupling nut products are intended to

be loaded in tension only. Do not exceed

the listed safe working loads.

wecall catalog

Documents