External Tooth, Lock Washer, Internal Tooth, Full Washers, Form A
301 Stainless Steel, TPE, Steel, Copper, Brass
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
13 mm, 16.2 mm, 5.36 mm, 21 mm, 6.5 mm
1.2 mm, 1.8 mm, 0.8 mm, 3.5 mm, 2.5 mm
M5 (Form A), M5, M4, M2, M2.5
DIN 6797A, BS 4320B, BS 4320:1968, BS 4320, ASME B18.21.1