Narrow, USS, Large Outside Diameter, Standard, Mil-Spec
Steel, Stainless Steel, PEEK, Brass, Titanium
1/2", 50 mm, 23 mm, 44 mm, 2 3/4"
20.2 mm, 10.77 mm, 0.172", 1.172", 0.781"
1.75 mm, 3 mm, 0.16 mm, 0.28 mm, 0.3 mm
DIN 7980, DIN 6797J, BS 4320:1968, DIN 125A, ASME B18.21.1