Beveled, Large Outside Diameter, Mil-Spec, USS, Standard
Brass, Titanium, Alloy Steel, Nylon, Phenolic Resin
45 mm, 50 mm, 19 mm, 3 3/4", 44 mm
14.5 mm, 20.2 mm, 0.375", 1.172", 2.125"
0.5 mm, 0.3 mm, 0.28 mm, 8.1 mm, 2.5 mm
M58, M2.6, #12, 7/16", M3
DIN 7980, DIN 6797A, BS 4320B, DIN 127B, DIN 7603A