ASME B18.31.2 Stud Bolt

Leader-Fastener® ASME B18.31.2 Stud Bolt implies to plain threaded rods with full body thread coverage. Full threaded stud bolts are used with 2 regular or heavy hex nuts. Fully threaded studs comes with chamfered and non-chamfered ends. Chamfered stud bolts are used for bolting flanges where length of engagement is considered from first to last thread and calculated as per ANSI/ASME B16.5 or other respective flange standards. Plain non chamfered stud bolts are often used for general bolting and cut from large threaded rods for simplicity. Fully Threaded stud bolt dimensions are defined in both metric and imperials sizes with unified national coarse pitch (UNC), fine pitch (UNF), fixed pitch (UN) and ISO metric thread profile. These are produced across all material categories and ASTM specifications.

This Standard covers the general and dimensional data for inch series threaded rods. Included are the following thread configurations and diameters:

•UNC threads #4 through 4 inches

•UNF threads #4 through 1-1/2 inches

•8 UN threads 1-1/8 through 4 inches

•Acme threads 1/4 through 5 inches

At this time, there are no ISO standards for inch threaded rods.

Leader-Fastener® ASME B18.31.2 Continuous Thread Studs