Heavy Hex Jam Nut

Heavy Hex Jam Nut

Porteous III



Heavy Hex Jam Nut: A six-sided internally threaded fastener which is only 2/3 the thickness of a heavy hex nut. Jam nuts are tightened against the work surface and a full heavy hex nut is tightened against the heavy hex jam nut to keep it from loosening. *ZB - BLUE ZINC

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