Cup, Nylon Washers, Mudguard, Full Washers, Form A
Brass, Steel, TPE, Copper, Stainless Steel
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
12.5 mm, 5.3 mm, 5.36 mm, 4.36 mm, 6.5 mm
1.5 mm, 1.6 mm, 2 mm, 2.5 mm, 0.28 mm
M5, M2.5, M16, M3 (Form A), M5 (Form A)
DIN 125A, DIN 7603A, ASME B18.22.1
ASTM F844, BS 4320B, BS 4463