Cup, Mudguard, Crinkle, Full Washers, Form A
Fibre, Brass, Stainless Steel, TPE, Steel
3/4" X 3" X 1/4", 7.99 mm, 15.5 mm, 6.9 mm, 11.88 mm
8.4 mm, 12.5 mm, 16.2 mm, 2.25 mm, 6.5 mm
1.8 mm, 1.2 mm, 1.1 mm, 2 mm, 1 mm
M8, M3 (Form A), M5 (Form A), M6, M5
BS 4320:1968, BS 4463, ASME B18.21.1, ASME B18.8.1, BS 4320B