Cup, Plain Washer, Crinkle, Full Washers, Form A
Copper, Stainless Steel, TPE, Steel, Brass
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.6 mm, 4.85 mm, 2.1 mm, 4.36 mm, 6.5 mm
2.2 mm, 0.6 mm, 8.1 mm, 1.5 mm, 0.28 mm
M3 (Form A), M10, M24, M6, M5 (Form A)
BS 4320, BS 4320G, ASME B18.8.1, BS 4320B, ASME B18.21.1