Narrow, Mil-Spec, Large Outside Diameter, Oversized, USS
Nylon, Phenolic Resin, Steel, Stainless Steel, Titanium
9.5 mm, 11.1 mm, 19 mm, 3 1/4", 4 1/2"
6.5 mm, 1.172", 1.031", 3.125", 0.406"
5.8 mm, 0.3 mm, 2.2 mm, 0.8 mm, 0.28 mm
DIN 6798J, BS 4320, DIN 6797A, BS 4320B, DIN 127B