Lock Washer, Cup, External Tooth, Full Washers, Form A
Brass, Steel, TPE, Nylon, Copper
3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 20 mm, 11.88 mm
5 mm, 2.25 mm, 17 mm, 4.36 mm, 6.5 mm
5.8 mm, 1.8 mm, 0.28 mm, 8.1 mm, 0.3 mm
M6, M5 (Form A), M4, M10, M3
DIN 7603A, BS 4320B, BS 4320, ASME B18.21.1, BS 4320G