6408-04 Hydraulic Fitting 1/4" Male Boss SAE Plug; AF 7237-04 Hex Head Plug

CARBON STEEL 6408-04 HYDRAULIC FITTING 1/4" MALE MALE BOSS PLUG PLUG (Tube O.D. / Hose I.D. Size) THREAD SIZES FOR 6408-04 HYDRAULIC FITTING 7/16"-20 MALE MALE BOSS PLUG PLUG To measure threads, Calipers work very well.