Internal Tooth, Plain Washer, Crinkle, Full Washers, Form A
Steel, Copper, Vulcanised Fibre, TPE, Brass
4.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.2 mm, 5.36 mm, 2.25 mm, 17 mm, 6.5 mm
0.9 mm, 1.8 mm, 8.1 mm, 1.2 mm, 2.5 mm
M4, M3 (Form A), M10, M5 (Form A), M2
DIN 7980, ASME B18.21.1, BS 4320B, DIN 7603A, BS 4320