Crinkle, Cup, Mudguard, Full Washers, Form A
Fibre, Brass, Steel, TPE, Copper
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 10.5 mm, 2.2 mm, 13 mm, 6.5 mm
1.8 mm, 8.1 mm, 1.6 mm, 1 mm, 0.28 mm
M24, M5 (Form A), M4, M2, M3
BS 4320B, DIN 7980, DIN 6798J, ASME B18.8.1, DIN 6797J