Uflex - Male Run T-Fitting - 3/8" x 3/8" Tube x 1/4" NPT - 171CA-6-4. Typical Application:. Used to connect any 1/4 NPT Female port to our hoses. Specifications:. 1/4 NPT to 3/8 COMP FITTING. Helm side - 1/4 NPT. Hose side - 9/16 - 24 UNEF 2A