Spring, Crinkle, Mudguard, Full Washers, Form A
TPE, Brass, Stainless Steel, Steel, Copper
7.99 mm, 15.5 mm, 12 mm, 6.9 mm, 11.88 mm
6.4 mm, 14 mm, 2.25 mm, 4.36 mm, 6.5 mm
1.2 mm, 0.16 mm, 1.8 mm, 8.1 mm, 2.5 mm
M20, M3 (Form A), M10, M12, M5 (Form A)
BS 4320B, DIN 6798J, ASME B18.8.1, ASME B18.21.1, BS 4463