Internal Tooth, Mudguard, Crinkle, Full Washers, Form A
Brass, Steel, 301 Stainless Steel, Stainless Steel, TPE
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, 12.5 mm, 2.25 mm, 6.5 mm
0.7 mm, 1.6 mm, 8.1 mm, 1.1 mm, 2.2 mm
M2.5, M3 (Form A), M5 (Form A), M2, M5
DIN 7980, BS 4320:1968, ASME B18.8.1, DIN 6797J, BS 4320B