●[THREADED] - Coarse thread, M3 diameter, 0.5mm pitch. ●[SIZE] - 0.22" ( 5.5mm) width across flat, 0.09" (2.4mm) height. ●[MATERIAL] - Made of stainless steel 201, wear-resisting and durable to use. ●[USED WITH] - Screws onto a bolt, cap screw or threaded rod of the same thread size. ●[GREAT REPLACEMENT] - Great replacement for industrial and construction fasteners,also can be a important accessories in your daily life