[THREADED]: Thread Size: 5/16 -18; Thread Pitch: 18 TPI Coarse Thread UNC; Thread Coverage: Full. [SIZE] - 0.49" (12.5mm) width across flat, 0.35" (9mm) height.. [MATERIAL]: Made of 304 stainless steel, rust-resistant, and durable to use.. [FEATURE]: With a nylon insert, these lock nuts greatly reduce loosening under vibrations and torque.. [GREAT REPLACEMENT] - Great replacement for industrial and construction fasteners, also can be an important accessory in your daily life..
