Mudguard, Plain Washer, Cup, Full Washers, Form A
Steel, Ceramic, Vulcanised Fibre, Copper, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.36 mm, 21 mm, 4.85 mm, 17 mm, 6.5 mm
1.8 mm, 3.5 mm, 8.1 mm, 3 mm, 0.28 mm
M24, M5 (Form A), M5, M2, M10
BS 4320B, DIN 127B, BS 4320G, BS 4320, ASME B18.22.1
ASTM F844