Nut Application Potable Water Fitting Material Brass Maximum Operating Pressure 400 psi Maximum Operating Temperature 250 Degrees F Overall Length 3/8 in Thread Size 5/16-24 Specific Fitting Shape Nut System of Measurement Imperial Compatible Tube Outer Diameter 1/8 in Standards NSF/ANSI 61 Annex G Compatible Tube Material Aluminum Copper Thermoplastic Fitting Connection Type Compression Hex Size 3/8 in Minimum Operating Temperature 65 Degrees F