1/2-13 Heavy Hex Structural Nuts A 563 D H Plain USA (Pack Qty 375) BC-50A563DH

Heavy Hex Structural Nuts A 563 D H Plain USA

A six-sided internally threaded fastener which is both thicker and wider across the flats than a same-sized finished hex nut. Nuts in sizes 7/16 & smaller shall be double chamfered. Larger sizes are either double chamfered or chamfered on top with a washer faced bearing surface

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