Female Connector, Application Gases, Liquids, Fitting Side A Connection Type Compression, Fitting Side B Connection Type FNPT, Fitting Material Brass, Fitting Side A Tube Outer Diameter 3/4 in, Maximum Operating Temperature 400 Degrees F, Overall Length 1 31/32 in, Specific Fitting Shape Straight Adapter, Fitting Side B Pipe Size 3/4 in, Compatible Fitting Brands CPI, Thread Size A 1-20, Series CPI(TM), System of Measurement Imperial, Standards ASME SB75, ASTM B75, Hex Size 1 3/8 in WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov -