Bulkhead Union Fitting Material Brass Flare Angle 45 Degrees Application Air Fitting Side A Connection Type Compression 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 7/16-24 Hex Size 9/16 in Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 1 7/8 in Specific Fitting Shape Straight Bulkhead Union Standards SAE J1131 SAE J246