SAE, Narrow, Mil-Spec, Standard, Large Outside Diameter
Nylon, Steel, Phenolic Resin, Brass, Alloy Steel
2 1/4", 2 3/16", 1 37/64", 15/16", 2 3/4"
0.25", 0.563", 0.75", 0.875", 1.125"
1.01 mm, 0.3 → 0.25 mm, 2.5 mm, 1.65 - 1.90 mm, 1.08 mm
ASTM F436, DIN 127B, ASME B18.22.1
ASTM F844, BS 3410, DIN 125A