External Tooth, Crinkle, Full Washers, Flat Washers, Form A
Fibre, Nylon, Brass, Copper, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
2.1 mm, 3.2 mm, 2.25 mm, 10 mm, 6.5 mm
8.1 mm, 2.5 mm, 1.1 mm, 1 mm, 0.28 mm
M3, M24, M12, M5 (Form A), M2
DIN 7980, ASME B18.22.1
ASTM F844, DIN 125A, BS 4320B, BS 4320