Standard, Mil-Spec, Beveled, Large Outside Diameter, SAE
Steel, Brass, Titanium, Stainless Steel, Nylon
40 mm, 20 mm, 1 3/8", 26 mm, 23 mm
20.2 mm, 6.62 mm, 1.625", 1.875", 0.172"
1.25 mm, 3 mm, 0.16 mm, 0.28 mm, 0.3 mm
1/4", M12, M6, 3/4", 3/8"
BS 4320, DIN 7980, DIN 6797J, BS 4320:1968, DIN 125A