External Tooth, Crinkle, Plain Washer, Full Washers, Form A
Brass, Steel, 301 Stainless Steel, TPE, Copper
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
5.3 mm, 4.85 mm, 2.1 mm, 2.25 mm, 6.5 mm
1.2 mm, 1.1 mm, 1.5 mm, 1 mm, 2.2 mm
M2, M12, M10, M5 (Form A), M20
DIN 6797A, DIN 127B, DIN 7980, BS 4320, BS 4320B