External Tooth, Crinkle, Lock Washer, Full Washers, Form A
Copper, Brass, Nylon, Steel, Stainless Steel
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
5.3 mm, 12.5 mm, 8 mm, 6 mm, 6.5 mm
8.1 mm, 1.2 mm, 1.1 mm, 1.6 mm, 1 mm
M2, M3 (Form A), M5, M5 (Form A), M12
DIN 6797A, BS 4320B, ASME B18.21.1, ASTM F436, BS 4320G