High strength, heavy duty hexagonal
construction screws with diameters from 1/2" to 1-1/2" are covered by
the ASTM A325
standard. Because these bolts are intended for use in structural connections,
the thread length is shorter than regular hexagonal bolts. For thread lengths
and other relevant dimensions, please see the structural bolts page on our
website. This specification applies only to strong hexagonal construction
screws. Screws with comparable mechanical properties but different shapes and
thread lengths are covered in specification Astm A449.
Specification A449 covers screws for general purpose use, including anchor
screws. For screws and bolts of tempered steel greater than 1-1/2 in. in
diameter and with comparable mechanical properties. The F3125 specification is
a consolidation and replacement of six ASTM standards, including; A325, A325M, A490, A490M, F1852, and F2280.
Source url: https://www.bigboltnut.com/product/astm-a325-standard.html
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