SPOC 3/8-03 is model number of 3/8" O.D connector with R, PT, BSPT 3/8 thread stainless steel hex socket head male straight push in air fittings, designed to be round shaped body with internal hexagon which makes it possible to be installed in the closely spaced, tightening with a hexagon wrench. Constructed of high grade stainless steel 316 and seal FKM, 3/8" x R 3/8 stainless steel round male straight push to connect fittings fit for high temperature and corrosive environment, which provides a simple way to push in and pull out the tube.