Internal Tooth, Cup, Lock Washer, Full Washers, Form A
Brass, TPE, Vulcanised Fibre, Steel, Stainless Steel
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 3.2 mm, 10.5 mm, 5 mm, 6.5 mm
8.1 mm, 1.1 mm, 1 mm, 0.8 mm, 0.28 mm
M24, M5 (Form A), M2, M4, M2.5
ASME B18.21.1, DIN 6797A, BS 4320G, DIN 6797J, BS 4320B