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ASME B18.2.1-2012

Square, Hex, Heavy Hex, and Askew Head Bolts and Hex, Heavy Hex, Hex Flange, Lobed Head, and Lag Screws (Inch Series)

This Standard covers the dimensional requirements for nine product types of inch series bolts and screws recognized as American National Standard.

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American Society of Mechanical Engineers [asme]

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