Brass Flare Fittings Application Air Flammable Liquid Freon Inert Gases Non-Combustible Gases Non-Potable Water Fitting Thread Size 5/8-18 Flare Angle 45 Degrees Fitting Material Brass Hex Size 3/4 in Maximum Operating Pressure 2 800 psi Maximum Operating Temperature 250 Degrees F Overall Length 29/32 in Specific Fitting Shape Nut Compatible Auto Systems Adapters Fuels Natural Gas Propane Refrigerant Lines Compatible Tube Outer Diameter 3/8 in Standards SAE J512 SAE J513