Internal Tooth, Mudguard, Crinkle, Full Washers, Form A
Fibre, Steel, Copper, TPE, Brass
3/4" X 3" X 1/4", 7.99 mm, 15.5 mm, 6.9 mm, 11.88 mm
13 mm, 5.3 mm, 12.2 mm, 12.5 mm, 6.5 mm
3.5 mm, 8.1 mm, 2.2 mm, 2.5 mm, 0.28 mm
M3 (Form A), M10, M16, M5 (Form A), M4
BS 4320:1968, BS 4320G, ASME B18.21.1, BS 4320B, DIN 7603A