6408HHP-08 HYDRAULIC FITTING 1/2" MALE HOLLOW HEX BOSS PLUG PLUG (Tube O.D. / Hose I.D. Size)
THREAD SIZES FOR 6408HHP-8 HYDRAULIC FITTING 3/4"-16 MALE HOLLOW HEX BOSS PLUG PLUG
To measure threads, Calipers work very well.