External Tooth, Lock Washer, Cup, Full Washers, Form A
Steel, TPE, Ceramic, 301 Stainless Steel, Nylon
12.5 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 6.4 mm, 5.36 mm, 2.25 mm, 6.5 mm
0.4 mm, 1.2 mm, 0.8 mm, 0.16 mm, 0.28 mm
M3.5, M20, M3 (Form A), M5 (Form A), M3
BS 4320G, BS 4463, DIN 6797J, BS 4320, ASME B18.21.1