2502-05-02 HYDRAULIC FITTING 5/16 MALE JIC X 1/8" FEMALE PIPE 90 DEGREE (Tube O.D. / Hose I.D. Size)
THREAD SIZES FOR 2502-05-02 HYDRAULIC FITTING 1/2"-20 MALE JIC X 1/8" FEMALE PIPE 90 DEGREE
To measure threads, Calipers work very well.