Crinkle, Cup, Mudguard, Full Washers, Form A
TPE, Nylon, Copper, Steel, Brass
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 21 mm, 2.25 mm, 4.36 mm, 6.5 mm
8.1 mm, 0.4 mm, 1.2 mm, 2.5 mm, 1.6 mm
M3 (Form A), M10, M5 (Form A), M12, M3
DIN 7980, BS 4320, ASME B18.22.1
ASTM F844, ASME B18.21.1, DIN 125A