External Tooth, Lock Washer, Mudguard, Full Washers, Form A
Steel, Brass, TPE, Copper, Stainless Steel
12 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 5.3 mm, 2.25 mm, 6 mm, 6.5 mm
1.8 mm, 0.4 mm, 3.5 mm, 0.28 mm, 8.1 mm
M20, M5, M24, M2, M5 (Form A)
DIN 6797J, ASME B18.22.1
ASTM F844, BS 4320B, DIN 7603A, ASME B18.21.1