Narrow, Mil-Spec, Standard, USS, Large Outside Diameter
Steel, Stainless Steel, Phenolic Resin, Titanium, PEEK
20 mm, 3 1/2", 26 mm, 3 3/4", 60 mm
8.62 mm, 20.2 mm, 1.172", 10.5 mm, 3.125"
0.16 mm, 0.9 mm, 0.28 mm, 1.5 mm, 0.6 mm
ASME B18.8.1, DIN 6797J, BS 4320:1968, DIN 125A, ASME B18.21.1