Cup, Mudguard, Full Washers, Flat Washers, Form A
Vulcanised Fibre, TPE, Nylon, Steel, Brass
12.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3 mm, 2.25 mm, 13 mm, 4.36 mm, 6.5 mm
2.2 mm, 0.9 mm, 0.28 mm, 0.7 mm, 1.5 mm
M5, M3 (Form A), M5 (Form A), M2, M8
BS 4320:1968, BS 4320, ASME B18.8.1, BS 4320B, BS 4463