Internal Tooth, Cup, Crinkle, Full Washers, Form A
Brass, Steel, 301 Stainless Steel, TPE, Copper
3/4" X 3" X 1/4", 7.99 mm, 15.5 mm, 6.9 mm, 11.88 mm
2.2 mm, 2.25 mm, 17 mm, 21 mm, 6.5 mm
1 mm, 1.8 mm, 0.6 mm, 1.1 mm, 0.28 mm
M8, M24, M5 (Form A), M5, M4
BS 4320:1968, BS 4320G, ASME B18.8.1, BS 4320B, ASME B18.21.1