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The QA1 left-hand jam nut (5/16-24) is an aluminum locking nut with a 1/2" hex and 3/16" face width, sized to secure medium-thread left-hand fasteners while offering weight savings and corrosion resistance. It locks against a mating nut or threaded component to prevent loosening. QA1 offers this design in steel or aluminum, with standard and metric choices and clear-anodized aluminum finishes available.
QA1 Jam Nut - 5/16-24 Left Hand - 1/2in Hex 3/16in Wide - Aluminum
