SAE, Standard, USS, Beveled, Large Outside Diameter
PEEK, Nylon, Phenolic Resin, Brass, Alloy Steel
20 mm, 2 3/16", 1 37/64", 15/16", 3 1/2"
8.4 mm, 0.313", 0.75", 0.875", 1.125"
8.1 mm, 0.3 → 0.25 mm, 0.6 mm, 1.65 - 1.90 mm, 1.08 mm
BS 3410, DIN 125A, ASME B18.21.1, ASME B18.22.1
ASTM F844, BS 4320G