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The QA1 left-hand jam nut (3/8-24) is a steel locking nut with a 9/16" hex and 7/32" face width, designed to secure coarser left-hand threaded assemblies by clamping against a mating nut or stud. It helps maintain adjustments and resists loosening. QA1 offers this part in steel or aluminum, across standard and metric options, with clear-anodized aluminum finishes available where applicable.
QA1 Jam Nut - 3/8-24 Left Hand - 9/16in Hex 7/32in Wide - Steel
