Cup, Mudguard, Flat Washers, Full Washers, Form A
Fibre, Brass, 301 Stainless Steel, TPE, Steel
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
17 mm, 2.6 mm, 4.85 mm, 4.36 mm, 6.5 mm
0.6 mm, 1.2 mm, 0.3 mm, 2.2 mm, 0.28 mm
M3 (Form A), M6, M10, M5 (Form A), M4
BS 4320B, BS 4320:1968, BS 4320G, ASME B18.22.1
ASTM F844, DIN 6797J