Astm A325 Bolts

Joints using astm a325 or a490 bolts continues the tradition of earlier editions.

Astm a325 bolts.

These bolts are intended for use in structural connections and therefore have shorter thread lengths than standard hex bolts. Dimensions meet asme b18 2. The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety. 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.

Sections 5 1 5 2 and 5 3 were editorially revised to clarify strength requirements of slip critical connections. This info and more on our specialized a325 microsite. This specification is a consolidation of and replacement for six astm standards ranging from 1 2 through 1 1 2 diameter. 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.

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. Length is measured from under the head. The research council on structural connections is a non profit volunteer organization whose research projects serve to provide safety. Section 6 2 1 was modified to permit the use of a490 type bolts with round.

The equivalent metric standard is astm a325m which is titled standard specification for. Material meets astm f3125 specifications for quality. A325 a325m a490 a490m. Astm a325 structural bolts steel heat treated 120 105 ksi minimum tensile strength astm a490 structrual bolts alloy steel heat treated 150 ksi minimum tensile strength.

The major changes are. Asme b18 2 6 covers dimensional standards for a325 heavy hex structural bolts rcsc. This specification covers the chemical physical and mechanical requirements for structural bolts manufactured from steel and alloy steel in two strength grades two styles and two types. Asme b18 2 6 covers dimensional standards for a325 heavy hex structural bolts rcsc.

The most common heavy hex head screw these steel screws meet astm a325 regulations for structural joints such as mating i beams and scaffolding.