Cup, Mudguard, Plain Washer, Full Washers, Form A
301 Stainless Steel, Brass, Ceramic, Vulcanised Fibre, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 6 mm, 2.1 mm, 2.2 mm, 6.5 mm
3.5 mm, 0.6 mm, 1.6 mm, 0.8 mm, 0.16 mm
M8, M3 (Form A), M16, M12, M5 (Form A)
DIN 7603A, BS 4320B, BS 4320, ASME B18.21.1, BS 4463