Butt-Weld Adapter, Fitting Side A Connection Type Compression, Fitting Side B Connection Type Butt Weld, Fitting Material Stainless Steel, Fitting Side A Tube Outer Diameter 1/2 in, Fitting Side B Tube Outer Diameter 1/2 in, Material Grade 316, Maximum Operating Pressure 6,700 psi, Maximum Operating Temperature 1,200 Degrees F, Overall Length 1 15/16 in, Specific Fitting Shape Straight Adapter, Compatible Fitting Brands A-LOK, Thread Size A 3/4-20, Series A-LOK, System of Measurement Imperial