Tube Nut Application Air Natural Gas Non-Potable Water Fitting Material Brass Maximum Operating Temperature 400 Degrees F Overall Length 13/16 in Thread Size 1 5/16-20 Specific Fitting Shape Nut/Sleeve System of Measurement Imperial Compatible Tube Outer Diameter 1 in Compatible Fitting Brands Swagelok Series CPI(TM) Standards ASTM B16 Alloy 360 ASTM B453 Alloy 345 CA-345 CA-360 QQ-B 626 Alloy 360 Fitting Connection Type Compression Hex Size 1 1/2 in