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The QA1 left-hand jam nut kit (5/16-24) contains five aluminum jam nuts, each with a 1/2" hex and 3/16" face width for medium-thread left-hand applications. These jam nuts clamp against mating hardware to prevent backing off and secure adjustments. QA1 offers similar steel and aluminum options across standard and metric sizes, with clear-anodized finishes for aluminum versions where applicable.
QA1 Jam Nut - 5/16-24 Left Hand - 1/2in Hex 3/16in Wide - Aluminum - 5 Pack
