SAE, Oversized, Large Outside Diameter, USS, Standard
Nylon, Phenolic Resin, Alloy Steel, Titanium, Steel
50 mm, 66 mm, 2 1/4", 5 1/2", 28 mm
0.813", 0.594", 0.391", 0.125", 0.938"
1.25 mm, 1 mm, 0.16 mm, 0.28 mm, 0.7 mm
DIN 7980, DIN 6797J, BS 4320:1968, DIN 125A, ASME B18.21.1