Mil-Spec, USS, Standard, Beveled, SAE
Alloy Steel, Stainless Steel, Titanium, Nylon, Phenolic Resin
40 mm, 4", 19 mm, 23 mm, 3 3/4"
6.5 mm, 16.5 mm, 0.375", 0.813", 1.172"
5.8 mm, 1.2 mm, 0.5 mm, 1.6 mm, 0.3 mm
#12, 1 1/2", #5, 1/4", #10
BS 4320:1968, DIN 6797J, DIN 7980, ASME B18.21.1, BS 4320