Union, Fitting Material Brass, Flare Angle 45 Degrees , Application Natural Gases, LP Gases, Fitting Side A Connection Type Flared, Fitting Side B Connection Type Flared, Fitting Side A Tube Outer Diameter 1/4 in, Fitting Side B Tube Outer Diameter 1/4 in, Fitting Thread Size 7/16-20, Hex Size 7/16 in, Maximum Operating Pressure 1,400 psi, Maximum Operating Temperature 250 Degrees F, Overall Length 1 5/32 in, Specific Fitting Shape Straight Connector, Standards SAE J512, SAE J513