External Tooth, Mudguard, Crinkle, Full Washers, Form A
301 Stainless Steel, Fibre, Ceramic, TPE, Brass
1/2", 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 3.2 mm, 2.2 mm, 2.25 mm, 6.5 mm
5.8 mm, 0.7 mm, 1.8 mm, 1.1 mm, 0.28 mm
M8, M3 (Form A), M12, M5 (Form A), M2
BS 4320:1968, BS 4320, DIN 6797J, BS 4320G, DIN 7603A