The QA1 left-hand jam nut kit (5/16-24) contains six steel jam nuts, each with a 1/2" hex and 3/16" face width for medium-thread left-hand fastening needs. These jam nuts clamp against mating nuts or rods to keep adjustments secure and resist back-off. QA1 offers comparable aluminum options, with standard and metric choices and clear-anodized finishes for aluminum where specified.
QA1 Jam Nut - 5/16-24 Left Hand - 1/2in Hex 3/16in Wide - Steel - 6 Pack