Internal Tooth, Crinkle, Mudguard, Full Washers, Form A
Steel, Ceramic, 301 Stainless Steel, TPE, Stainless Steel
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
4.85 mm, 2.1 mm, 2.25 mm, 4.36 mm, 6.5 mm
8.1 mm, 1.2 mm, 0.8 mm, 2.5 mm, 0.28 mm
M3 (Form A), M5 (Form A), M16, M20, M8
BS 4320B, ASME B18.8.1, DIN 7980, DIN 7603A, ASME B18.21.1