3/8" x 24 unf male fully threaded steel nut,.808” long overall.
SAE flare (45 degree/inverted/double)
Most common American Long style nut.
Used in high vibration areas.
Uses 3/8” wrench.
This is the standard American thread brake line nut for use with 3/16”/4.75mm OD (CNF-3) tubing with SAE flare.