External Tooth, Cup, Lock Washer, Full Washers, Form A
Brass, Steel, Fibre, Stainless Steel, TPE
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
11 mm, 10.5 mm, 2.25 mm, 13 mm, 6.5 mm
3.5 mm, 0.28 mm, 0.5 mm, 2 mm, 2.2 mm
M3, M24, M5 (Form A), M16, M2
DIN 7603, DIN 127B, ASME B18.22.1
ASTM F844, BS 4320B, BS 4463