Crinkle, Cup, External Tooth, Full Washers, Form A
Brass, Fibre, Copper, TPE, Stainless Steel
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 11 mm, 8.4 mm, 2.25 mm, 6.5 mm
1.8 mm, 0.28 mm, 8.1 mm, 1.6 mm, 0.3 mm
M3 (Form A), M10, M24, M5 (Form A), M2
DIN 127B, BS 4320B, DIN 7980, BS 4320, ASME B18.8.1