External Tooth, Crinkle, Flat Washers, Full Washers, Form A
Brass, Fibre, Nylon, Stainless Steel, TPE
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
14 mm, 6.4 mm, 8 mm, 6 mm, 6.5 mm
1 mm, 0.6 mm, 0.4 mm, 2.5 mm, 2.2 mm
M20, M5, M12, M5 (Form A), M3
DIN 127B, DIN 6797J, DIN 6797A, DIN 7980, BS 4320B