Mil-Spec, Standard, Large Outside Diameter, SAE, Oversized
Brass, Titanium, Nylon, PEEK, Phenolic Resin
40 mm, 45 mm, 18 mm, 66 mm, 5 1/2"
0.813", 1.063", 0.391", 1.563", 1.313"
3.5 mm, 0.28 mm, 1.6 mm, 8.1 mm, 0.4 mm
BS 4320G, DIN 7980, BS 4320B, DIN 7603A, BS 4463