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The QA1 left-hand jam nut kit (1/4-28) includes five steel jam nuts, each with a 7/16" hex and 5/32" face width for locking fine-thread left-hand applications. These nuts clamp against mating hardware to hold adjustments in place and prevent loosening. QA1 also offers comparable aluminum versions, with standard and metric options and clear anodizing available on aluminum parts.
QA1 Jam Nut - 1/4-28 Left Hand - 7/16in Hex 5/32in Wide - Steel - 5 Pack
