Internal Tooth, External Tooth, Lock Washer, Full Washers, Form A
Stainless Steel, Steel, 301 Stainless Steel, TPE, Brass
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
12.2 mm, 2.25 mm, 13 mm, 4.36 mm, 6.5 mm
3.5 mm, 1.6 mm, 2 mm, 0.3 mm, 3 mm
M4, M3 (Form A), M16, M5 (Form A), M2
BS 4320:1968, DIN 7603, BS 4320, ASME B18.21.1, DIN 7603A