Nut, Application Air, Chemicals, Gases, Non-Potable Water, Fitting Material Stainless Steel, Material Grade 316, Maximum Operating Pressure 8,100 psi, Maximum Operating Temperature 1,200 Degrees F, Overall Length 13 1/2 mm, Thread Size 1/2-20, Specific Fitting Shape Nut, System of Measurement Imperial, Compatible Tube Outer Diameter 8 mm, Compatible Fitting Brands LET-LOK, Swagelok, Series Let-Lok, Standards ASME, ASTM-A, CE, MIL-F-18866, SAE, Fitting Connection Type Compression, Hex Size 16 mm