USS, Large Outside Diameter, Mil-Spec, SAE, Beveled
Alloy Steel, Steel, Nylon, PEEK, Phenolic Resin
20 mm, 3 1/2", 1 5/8", 4 1/2", 2 1/4"
1.375", 1.313", 1.563", 0.5", 1.109"
2.5 mm, 0.4 mm, 1.6 mm, 1 mm, 0.28 mm
DIN 127B, DIN 6797A, BS 4320G, DIN 125A, BS 4320B