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ASTM A307

Quick Links

Hex Bolts Bent Anchor Bolts A307 All Thread Rod ASTM A563 Hex Nuts

Scope

The ASTM A307 specification covers carbon steelbolts and studs ranging from 1/4 through

4 diameter. This is your everyday, run of the mill bolt specification often manufactured

using A36 round bar. There are three grades A, B, and C* which denote tensile strength,

configuration, and application. Refer to the Mechanical Properties Chart for the subtlestrength differences within each grade.

Grades

A Headed bolts, threaded rods and bent bolts intended for general applications.

B Heavy hex boltsand studs intended for flanged joints in piping systems with cast iron

flanges.

C*Nonheaded anchor bolts, either bent or straight, intended for structural anchorage

purposes. The end of a grade C anchor bolt intended to project from the concrete will be

painted green for identification purposes. Permanent marking is a supplementalrequirement. *As of August 2007, grade C has been replaced by specificationF1554

grade 36.We will continue to supply grade C, if required by the project.

Mechanical Properties

Grade Tensile, ksi Yield, min, ksi Elong %, min

A 60 min -- 18

B 60 - 100 -- 18

C* 58 - 80 36 23

Recommended Nuts and Washers

Nuts

WashersA307 Grades A & C* A307 Grade B

1/4 - 1-1/2 1-5/8 - 4 1/4 - 4

A563A Hex A563A Heavy Hex A563A Heavy Hex F844

http://www.portlandbolt.com/products/bolts/hex_bolts.htmlhttp://www.portlandbolt.com/products/bolts/hex_bolts.htmlhttp://www.portlandbolt.com/products/bent/anchor-bolts.htmlhttp://www.portlandbolt.com/products/bent/anchor-bolts.htmlhttp://www.portlandbolt.com/products/rods/allthread_rod.htmlhttp://www.portlandbolt.com/products/rods/allthread_rod.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_A563.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_A563.htmlhttp://www.portlandbolt.com/products/bolts/heavy_hex_bolts.htmlhttp://www.portlandbolt.com/products/bolts/heavy_hex_bolts.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_F1554.htmlhttp://www.portlandbolt.com/products/bolts/heavy_hex_bolts.htmlhttp://www.portlandbolt.com/technicalinformation/astm/ASTM_A563.htmlhttp://www.portlandbolt.com/products/rods/allthread_rod.htmlhttp://www.portlandbolt.com/products/bent/anchor-bolts.htmlhttp://www.portlandbolt.com/products/bolts/hex_bolts.html

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ASTM A325

Quick Links

DTI Washer Large Diameter A325 Rotational Capacity Bolt Torque Chart

Scope

The ASTM A325 specification covers high strength heavy hex structural bolts from

diameter through 1-1/2 diameter. These bolts are intended for use in structural connections

and therefore have shorter thread lengths than standard hex bolts. Refer to theStructural

Boltspage of our site for thread lengths and other related dimensions.

This specification is applicable to heavy hex structural bolts only. For bolts of other

configurations and thread lengths with similar mechanical properties, seeSpecification A

449.

Bolts for general applications, including anchor bolts, are covered by Specification A 449.

Also refer to Specification A 449 for quenched and tempered steel bolts and studs with

diameters greater than 1-1/2" but with similar mechanical properties.

Types

TYPE 1 Medium carbon, carbon boron, or medium carbon alloy steel.

TYPE 2 Withdrawn November 1991.

TYPE 3 Weathering steel.

T Fully threaded A325. (Restricted to 4 times the diameter in length)

M Metric A325.

Connection Types

SCSlip critical connection.

N Bearing type connection with threads included in the shear plane.

X Bearing-type connection with threads excluded from the shear plane.

Mechanical Properties

Size Tensile, ksi Yield, ksi Elong. %, min RA %, min

1/2 - 1 120 min 92 min 14 35

1-1/8 - 1-1/2 105 min 81 min 14 35

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Recommended Nuts and Washers