Nut Application Potable Water Fitting Material Brass Maximum Operating Pressure 400 psi Maximum Operating Temperature 250 Degrees F Overall Length 1/4 in Thread Size 3/8-24 Specific Fitting Shape Nut System of Measurement Imperial Compatible Tube Outer Diameter 3/16 in Standards NSF/ANSI 61 Annex G Compatible Tube Material Aluminum Copper Thermoplastic Fitting Connection Type Compression Hex Size 7/16 in Minimum Operating Temperature 65 Degrees F