External Tooth, Cup, Full Washers, Flat Washers, Form A
Stainless Steel, Fibre, Copper, TPE, Brass
12.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
5.36 mm, 2.25 mm, 13 mm, 8 mm, 6.5 mm
1.4 mm, 5.8 mm, 0.7 mm, 2.5 mm, 1.1 mm
M3, M5 (Form A), M2, M16, M5
ASME B18.22.1
ASTM F844, DIN 7980, BS 4320G, DIN 7603A, BS 4320B