Female Connector Application Compressed Natural Gas Fuels Gases Hydrogen Liquids Oils Petroleum Oil Steam Fitting Side A Connection Type Compression Fitting Side B Connection Type FNPT Fitting Material Brass Fitting Side A Tube Outer Diameter 3/8 in Maximum Operating Pressure 6 600 psi Maximum Operating Temperature 400 Degrees F Overall Length 1 15/32 in Specific Fitting Shape Straight Adapter Fitting Side B Pipe Size 1/4 in Compatible Fitting Brands A-LOK