External Tooth, Cup, Crinkle, Full Washers, Form A
Brass, Fibre, TPE, Stainless Steel, Steel
9.09 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
3.2 mm, 8.4 mm, 5.3 mm, 6.4 mm, 6.5 mm
2.5 mm, 0.4 mm, 1.8 mm, 0.28 mm, 8.1 mm
M10, M5 (Form A), M2, M2.5, M5
BS 4320:1968, ASME B18.22.1
ASTM F844, DIN 7603A, BS 4320B, BS 4463