Internal Tooth, Plain Washer, Lock Washer, Full Washers, Form A
Fibre, Brass, Steel, TPE, 301 Stainless Steel
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
12.5 mm, 5.36 mm, 4.36 mm, 5 mm, 6.5 mm
3.5 mm, 2 mm, 0.5 mm, 3 mm, 0.3 mm
M3 (Form A), M2, M5 (Form A), M16, M6
DIN 7603, DIN 7980, DIN 6797J, BS 4320B, ASME B18.21.1