Oversized, Standard, Beveled, USS, Large Outside Diameter
Stainless Steel, PEEK, Phenolic Resin, Alloy Steel, Titanium
20 mm, 18 mm, 2 3/16", 1 37/64", 15/16"
1.156", 0.438", 0.625", 0.875", 1.125"
0.76 mm, 1.01 mm, 0.3 → 0.25 mm, 1.65 - 1.90 mm, 1.08 mm
BS 4320G, BS 4320:1968, BS 3410, DIN 6798J, DIN 125A