External Tooth, Mudguard, Crinkle, Full Washers, Form A
Fibre, Stainless Steel, Steel, Brass, TPE
37 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
16.2 mm, 2.25 mm, 13 mm, 4.36 mm, 6.5 mm
5.8 mm, 0.7 mm, 0.16 mm, 2.5 mm, 0.28 mm
M4, M3 (Form A), M12, M5 (Form A), M8
BS 4463, BS 4320, ASME B18.21.1, ASME B18.8.1, BS 4320B