The NM-50-BK is a black nylon locknut designed to secure threaded fittings and connectors. This component features a standard M50 x 1.5 metric thread size, a thickness of 0.31 inches (8 mm), and wrenching flats measuring 2.36 inches (60 mm) for installation. As part of the nylon product line, this locknut provides a secure fastening solution for applications requiring M50 threaded entries, such as in electrical enclosures or industrial equipment.