UNION COMPRESSION SMALL HEX Application Air Fuel Hydraulic Oil Fitting Side A Connection Type Compression Finish/Coating Zinc Trivalent Fitting Material Steel Fitting Side A Tube Outer Diameter 1 1/2 in Fitting Side B Tube Outer Diameter 1 1/2 in Maximum Operating Pressure 2 000 psi Maximum Operating Temperature 450 Degrees F Overall Length 1 31/32 in Specific Fitting Shape Straight Connector Compatible Fitting Brands Air-Way Parker Thread Size A 1 7/8-12 Thread Size B 1 7/8-12