Plain Washer, Spring, Crinkle, Full Washers, Form A
Fibre, Stainless Steel, TPE, Nylon, Steel
12.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 21 mm, 2.1 mm, 13 mm, 6.5 mm
0.9 mm, 5.8 mm, 2.5 mm, 0.28 mm, 1.1 mm
M24, M12, M16, M5 (Form A), M2.5
BS 4320, DIN 7980, BS 4320:1968, ASME B18.21.1, BS 4320B