Mil-Spec, Oversized, Large Outside Diameter, SAE, Beveled
Steel, Stainless Steel, Nylon, Brass, Titanium
45 mm, 4", 1 1/16", 4 1/2", 3"
16.5 mm, 1.172", 25 mm, 0.906", 1.063"
3.5 mm, 0.6 mm, 8.1 mm, 1.2 mm, 1.5 mm
BS 4320B, DIN 127B, BS 4320, BS 4320G, DIN 7603A