Lock Washer, Mudguard, Plain Washer, Full Washers, Form A
301 Stainless Steel, Ceramic, Vulcanised Fibre, Stainless Steel, Brass
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.7 mm, 5.3 mm, 4.85 mm, 10.5 mm, 6.5 mm
0.5 mm, 1.8 mm, 8.1 mm, 1.1 mm, 1.5 mm
M2.5, M3 (Form A), M20, M24, M5 (Form A)
BS 4320, ASME B18.22.1
ASTM F844, DIN 7980, ASME B18.21.1, BS 4320G