2603-06-06-06 HYDRAULIC ADAPTER 3/8" MALE JIC X 3/8" MALE JIC X 3/8" MALE JIC TEE (Tube O.D. / Hose I.D. Size)
THREAD SIZES FOR 2603-06-06-06 HYDRAULIC ADAPTER 9/16"-18 MALE JIC X 9/16"-18 MALE JIC X 9/16"-18 MALE JIC TEE
To measure threads, Calipers work very well.