A325 Structural Bolt Specifications

The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety.

A325 structural bolt specifications. Astm a325 is an astm international standard for heavy hex structural bolts titled standard specification for structural bolts steel heat treated 120 105 ksi minimum tensile strength it defines mechanical properties for bolts that range from 1 2 to 1 1 2 inches 13 to 38 mm in diameter. And less and 105 ksi for sizes over 1 0 to 1 1 2 in inclusive. The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety. Prepared by rcsc committee a 1 specifications and approved by the research council on structural connections.

Specification for structural joints using astm a325 or a490 bolts june 30 2004 supersedes the june 23 2000specification for structural joints using astm a325 or a490 bolts. These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Prior to its withdrawl in 2016 the astm a325 specification covered high strength heavy hex structural bolts from 1 2 diameter through 1 1 2 diameter. Asme b18 2 6 covers dimensional standards for a325 heavy hex structural bolts rcsc.

This specification covers two types of quenched and tempered steel heavy hex structural bolts having a minimum tensile strength of 120 ksi for sizes 1 0 in. If you are working with a325 structural bolts on a regular basis we strongly recommend purchasing a copy of the astm a325 specification from astm international. Formerly under the jurisdiction of committee f16 on fasteners this specification was withdrawn in may 2016 and replaced by specification f3125 f3125m.