External Tooth, Internal Tooth, Cup, Full Washers, Form A
Fibre, Steel, Brass, Stainless Steel, TPE
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 4.85 mm, 2.1 mm, 4.36 mm, 6.5 mm
2 mm, 1.2 mm, 0.28 mm, 8.1 mm, 0.8 mm
M12, M3 (Form A), M16, M5 (Form A), M20
DIN 6797J, BS 4320B, DIN 7980, DIN 7603A, BS 4463