Forged Nut Application Potable Water Fitting Thread Size 5/8-18 Flare Angle 45 Degrees Fitting Material Brass Hex Size 13/16 in Maximum Operating Pressure 1 000 psi Maximum Operating Temperature 250 Degrees F Overall Length 3/4 in Specific Fitting Shape Nut Compatible Auto Systems Domestic Compatible Tube Outer Diameter 3/8 in Standards NSF/ANSI 61 Annex G Fitting Connection Type Flared Minimum Operating Temperature 65 Degrees F