Thermocouple Connector Application Non-Potable Water Fitting Side A Connection Type Compression Fitting Side B Connection Type MNPT Fitting Material Brass Fitting Side A Tube Outer Diameter 1/4 in Maximum Operating Pressure 3 500 psi Maximum Operating Temperature 400 Degrees F Overall Length 1 1/2 in Specific Fitting Shape Straight Thermocouple Adapter Fitting Side B Pipe Size 1/4 in Compatible Fitting Brands CPI Thread Size A 7/16-20 Series CPI(TM) System of Measurement Imperial