Nut Application Air Natural Gas Non-Potable Water Steam Finish/Coating Zinc Plated Fitting Material Steel Maximum Operating Pressure 7 600 psi Maximum Operating Temperature 800 Degrees F Overall Length 9/16 in Thread Size 9/16-20 Specific Fitting Shape Nut System of Measurement Imperial Compatible Tube Outer Diameter 3/8 in Compatible Fitting Brands Swagelok Series A-LOK(R) Standards ASTM A108 QQ-S 637 Fitting Connection Type Compression Hex Size 11/16 in