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    Heavy Hex Head Bolts available in Carbon Steel (ASTM A307 Grade B) and Structural Steels (ASTM A325 & A490) manufactured to formerly ASME B18.2.1 now ASME B18.2.6 dimensions.

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    ASTM A307 Grade B Heavy Hex Bolt, National Coarse

    ASTM A307 Grade B Heavy Hex Head Bolt, National Coarse Thread, Plain Finish for use in flange bolting and anchoring industrial and commercial applications.

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    A325 Heavy Hex Bolts

    ASTM A325 Heavy Hex Bolts (Import & USA Domestic)

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    A490 Heavy Hex Bolts

    ASTM A490 Heavy Hex Bolts (Import & USA Domestic)

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