Swagelok SS-600-7-4 Female Connector, 3/8 in. Tube OD x 1/4 in. FNPT, 316 Stainless Steel

Two male threaded ends cannot mate, so your tube hookup needs a receiving thread at the instrument. You need the female connector on the Swagelok SS-600-7-4 to join 3/8 in. tube OD and 1/4 in. female NPT. Your 316 stainless steel connector receives that instrument thread opposite the tube connection.

You connect the tube through the Swagelok compression fitting end. The female port distinguishes this part from threaded connectors with male ends, so match it to your instrument. It gives your stainless steel fittings list a direct transition between tubing and the smaller nominal thread.

At a Gulf Coast sample bench, you can include this part among your instrumentation fittings for a male-threaded instrument hookup. Collins-Oliver stocks it in Baton Rouge, with same-day pickup and nationwide shipping. Ask the counter for a quote using your connection sizes and part number.