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ASTM Standard Summaries...

A193
A194
A307
A320
A325
A354
A449
A490
A563
F1554
F2329

Hex Head Bolt Markings...

SAE:



ASTM:



Nut Markings...

ASTM:

Copyright 2009 - The Fastener Connection, Inc. - 14820 Tomball Parkway, Suite 100 - Houston - Texas - USA - 77086
(Voice) 281-377-0870      (Facs) 281-377-0885