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The QA1 left-hand jam nut (1/4-28) is a steel locking nut with a 7/16" hex and 5/32" face width, built to secure fine-thread left-hand fasteners by clamping against a companion nut or threaded rod. It prevents unwanted rotation in adjustment or mounting applications. QA1 offers this nut in both steel and aluminum, with standard and metric sizing and clear-anodized aluminum variants where applicable.
QA1 Jam Nut - 1/4-28 Left Hand - 7/16in Hex 5/32in Wide - Steel
