Countersunk Washer, Mudguard, Plain Washer, Full Washers, Form A
Fibre, Ceramic, TPE, Brass, Stainless Steel
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.25 mm, 17 mm, 4.36 mm, 10 mm, 6.5 mm
1.4 mm, 5.8 mm, 0.16 mm, 0.3 mm, 1 mm
M16, M3 (Form A), M3, M5 (Form A), M8
BS 4320:1968, ASME B18.8.1, BS 4463, DIN 7980, BS 4320B