Compression Fitting Nut, Application Air, Natural Gas, Non-Potable Water, Potable Water, Steam, Fitting Material Stainless Steel, Material Grade 316, Maximum Operating Temperature 1, 200 Degrees F, Overall Length 11/16 in, Thread Size 3/4 In. -20, Specific Fitting Shape Single Ferrule Nut, System of Measurement Imperial, Compatible Tube Outer Diameter 1/2 in, Compatible Fitting Brands Swagelok, Series CPI (TM), Standards ASME SA-479, ASTM A276, BS970 316-S31, DIN 4401