Standard, USS, SAE, Mil-Spec, Oversized
Nylon, Brass, Titanium, Stainless Steel, Phenolic Resin
25 mm, 26 mm, 1 5/8", 1 3/4", 5 1/2"
6.5 mm, 14.5 mm, 16.5 mm, 1.875", 1.172"
0.16 mm, 0.8 mm, 8.1 mm, 1.6 mm, 2.5 mm
3/8", 1 1/2", 1", M16, M14
DIN 6797A, BS 4320B, BS 4320:1968, DIN 6797J, ASME B18.21.1