Nut Application Fluids Gases Finish/Coating Zinc Plated Fitting Material Steel Maximum Operating Temperature 500 Degrees F Overall Length 27/32 in Thread Size 3/4-16 Specific Fitting Shape Nut System of Measurement Imperial Compatible Tube Outer Diameter 1/2 in Series Ferulok Standards SAE J514 Fitting Connection Type Compression Hex Size 7/8 in Minimum Operating Temperature 65 Degrees F