External Tooth, Crinkle, Internal Tooth, Full Washers, Form A
Fibre, 301 Stainless Steel, TPE, Stainless Steel, Brass
37 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 8.4 mm, 4.85 mm, 2.25 mm, 6.5 mm
8.1 mm, 0.5 mm, 2 mm, 1.6 mm, 0.28 mm
M5 (Form A), M6, M5, M16, M4
BS 4463, BS 4320, DIN 7980, BS 4320G, ASME B18.21.1