Nut, Application Fluids, Gases, Fitting Material Stainless Steel, Material Grade 316, Maximum Operating Temperature 1,200 Degrees F, Overall Length 3/4 in, Thread Size 9/16-18, Specific Fitting Shape Nut, System of Measurement Imperial, Compatible Tube Outer Diameter 3/8 in, Series Ferulok, Standards SAE J514, Fitting Connection Type Compression, Hex Size 11/16 in, Minimum Operating Temperature 425 Degrees F