Narrow, Mil-Spec, SAE, Standard, Large Outside Diameter
Phenolic Resin, Brass, Alloy Steel, Steel, Titanium
7/16", 20 mm, 2 3/16", 1 37/64", 15/16"
1.281", 0.625", 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
3/8", 3 1/2", 1/2", 1", 1 1/8"
BS 3410, BS 4320:1968, ASTM F436, ASME B18.22.1
ASTM F844, BS 4320G