Tube Support Application Air Air Brake Compatible Fitting Connection Type Compression Compatible Tube Outer Diameter 3/4 in Compatible Tube Inner Diameter 5/8 in Fitting Material Brass Material Grade 304 Maximum Operating Pressure 150 psi Maximum Operating Temperature 200 Degrees F Overall Length 1 1/32 in Specific Fitting Shape Tube Insert System of Measurement Imperial Standards SAE J246 Minimum Operating Temperature 40 Degrees F