Tube End Reducer Application Gases Liquids Fitting Side A Connection Type Compression Fitting Side B Connection Type Compression Fitting Material Stainless Steel Fitting Side A Tube Outer Diameter 3/8 in Fitting Side B Tube Outer Diameter 1/4 in Material Grade 316 Maximum Operating Temperature 649 Degrees C Overall Length 1 19/32 in Specific Fitting Shape Straight Adapter Compatible Fitting Brands A-LOK Thread Size A 9/16-20 Thread Size B 7/16-20 System of Measurement Imperial