Internal Tooth, External Tooth, Cup, Full Washers, Form A
Fibre, Ceramic, TPE, Steel, Brass
4 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 12.2 mm, 13 mm, 16.2 mm, 6.5 mm
0.4 mm, 3.5 mm, 0.7 mm, 2.2 mm, 0.28 mm
M2.5, M5, M3 (Form A), M8, M5 (Form A)
BS 4320G, ASME B18.21.1, DIN 7603A, DIN 125A, BS 4320B