Cup, Lock Washer, Plain Washer, Full Washers, Form A
Ceramic, Vulcanised Fibre, Copper, Stainless Steel, Steel
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
16.2 mm, 21 mm, 13 mm, 10 mm, 6.5 mm
1.2 mm, 8.1 mm, 1.1 mm, 2.5 mm, 0.8 mm
M6, M10, M5 (Form A), M5, M2
BS 4320B, BS 4320:1968, DIN 127B, DIN 6797J, DIN 125A