External Tooth, Crinkle, Nylon Washers, Full Washers, Form A
TPE, Brass, Vulcanised Fibre, Stainless Steel, Copper
28 mm, 3/4" X 3" X 1/4", 15.5 mm, 6.9 mm, 11.88 mm
13 mm, 4.36 mm, 2.6 mm, 4.85 mm, 6.5 mm
8.1 mm, 0.4 mm, 0.5 mm, 1.6 mm, 2.5 mm
M20, M24, M12, M5 (Form A), M6
DIN 127B, BS 4320:1968, ASME B18.21.1, ASME B18.8.1, BS 4320B