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  1. TDMaintenence

    DH Nuts for A394 Tower Bolts

    Threaded Fasteners does stock ASTM A563 DH regular nuts. Both Nucor and St. Louis Screw & Bolt can also make them. I realize the DH nuts for ASTM A394 Type 1 bolts tend to be overkill on our transmission towers but decided to not go with a lesser grade since they are available, and for little...

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