5/16"-18 Square Head Machine Bolts

5/16"-18 Square Head Machine Bolts

16 products

    In black oxide and plain steel.

    Head/Wrench/8-point Socket size is 1/2"

    16 products
    5/16"-18 x 3/4" Square Head Machine Bolt, Black Oxide
    Sold Out
    5/16"-18 x 1" Square Head Machine Bolt, Plain
    5/16"-18 x 1" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 1-1/4" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 1-1/2" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 1-3/4" Square Head Machine Bolt, Black Oxide
    Sold Out
    5/16"-18 x 2" Square Head Machine Bolt, Plain
    5/16"-18 x 2" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 2-1/2" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 2-1/2" Square Head Machine Bolt, Plain
    5/16"-18 x 3" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 3-1/2"" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 4" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 5" Square Head Machine Bolt, Black Oxide
    5/16"-18 x 6" Square Head Machine Bolt, Plain
    5/16"-18 x 6" Square Head Machine Bolt, Black Oxide
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