Standard, Narrow, Large Outside Diameter, SAE, Mil-Spec
Nylon, Phenolic Resin, Brass, Titanium, Steel
45 mm, 3 1/2", 4", 19 mm, 40 mm
0.391", 1.563", 1.188", 1.109", 1.063"
1.75 mm, 0.16 mm, 0.9 mm, 0.28 mm, 1.5 mm
M4, M58, M2.6, 1/4", M2.5
DIN 7980, DIN 6797J, BS 4320:1968, DIN 125A, ASME B18.21.1