External Tooth, Spring, Cup, Full Washers, Form A
Steel, TPE, Stainless Steel, Nylon, Brass
4.51 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
21 mm, 16.2 mm, 5.36 mm, 2.25 mm, 6.5 mm
5.8 mm, 0.8 mm, 1.8 mm, 0.28 mm, 0.7 mm
M16, M5, M5 (Form A), M2, M10
BS 4320:1968, BS 4320G, ASME B18.22.1
ASTM F844, BS 4320B, ASME B18.21.1