A325 Structural Bolt Torque Specs

Astm f3125 f3125m is a structural bolt specification covering inch and metric bolt grades.

A325 structural bolt torque specs. Material meets astm f3125 specifications for quality. These will be addressed in this article. The f3125 specification is a consolidation and replacement of six astm standards including. Partially threaded screws come with precise threaded and unthreaded portions allowing you to place only the.

The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety. The bolt torque table below provides information such as tension torque tpi for the heavy structured bolts against its corresponding bolt sizes ranging from 1 2 to 1 1 2. Astm a325 specifications technical menu posted on july 1st 2015 by vapro. Bolt size tpi tension min tension max tightening torque range ft lbs min max galv wax tightening torque range ft lbs min max plain.

1 proofload is the published number that full size headed bolts are tested to. Asme b18 2 6 covers dimensional standards for a325 heavy hex structural bolts rcsc. Length is measured from under the head. For bolting specifications that do not have a published proofload it is usually calculated at 92 of minimum yield strength.

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 in diameter. Prepared by rcsc committee a 1 specifications and approved by the research council on structural connections. When looking at the mechanical requirements of bolts it appears that a grade a325 and sae j429 grade 5 are identical as do the.

In 2016 astm a325 was officially withdrawn and replaced by astm f3125 in which a325 now becomes a grade under the f3125 specification. A325 f1852 a490 and f2280. The bolt is stressed up to the proofload value and if there is no deformation elongation or fracture then the bolt is deemed to have passed. The most common heavy hex head screw these steel screws meet astm a325 regulations for structural joints such as mating i beams and scaffolding.

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. A325 a325m a490 a490m f1852 and f2280. This specification contains 4 inch series bolting grades. We are choosing to keep this technical information about the now obsolete a325 specification on our website for.

Dimensions meet asme b18 2. 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. The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety.