External Tooth, Cup, Crinkle, Full Washers, Form A
Brass, Fibre, TPE, Vulcanised Fibre, Copper
44 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 2.2 mm, 16.2 mm, 2.25 mm, 6.5 mm
0.6 mm, 1.2 mm, 1.1 mm, 2.5 mm, 1.6 mm
M2.5, M5, M3 (Form A), M5 (Form A), M12
DIN 7603, DIN 7980, ASME B18.8.1, BS 4320B, DIN 7603A