Standard, Narrow, Mil-Spec, USS, Large Outside Diameter
Nylon, Steel, Phenolic Resin, Alloy Steel, Titanium
1 17/32", 2 3/16", 1 37/64", 15/16", 2 1/4"
0.313", 0.5", 0.75", 0.875", 1.125"
8.1 mm, 0.3 → 0.25 mm, 1.65 - 1.90 mm, 1.08 mm, 3 mm
BS 3410, BS 4320:1968, DIN 6797J, DIN 127B, DIN 125A