Standard, Narrow, Beveled, USS, Large Outside Diameter
Phenolic Resin, Titanium, Alloy Steel, Nylon, Brass
25 mm, 20 mm, 3 1/2", 26 mm, 5 1/2"
0.391", 0.172", 1.188", 0.531", 0.535"
0.7 mm, 0.16 mm, 0.28 mm, 0.3 mm, 1.5 mm
BS 4320, DIN 7980, DIN 6797J, DIN 125A, ASME B18.8.1