Crinkle, External Tooth, Cup, Full Washers, Form A
Steel, Copper, TPE, Nylon, Brass
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 8.4 mm, 16.2 mm, 13 mm, 6.5 mm
8.1 mm, 2.5 mm, 1.6 mm, 1.1 mm, 0.3 mm
M20, M12, M24, M5 (Form A), M5
DIN 6797J, BS 4320B, DIN 7980, ASME B18.22.1
ASTM F844, BS 4320G