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Fastener Products

Flange Nuts

  • Serrated Flange Nut

    Serrated Flange Nuts

    ASTM A563 Grade A 
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    Hex nut with a serrated bearing surface beneath the flange that displaces material on the mating surface when the nut is torqued down, forming a connection that resists loosening. Used in applications where vibration is an issue.