3 1/8 - 16

HEMCO

3 1/8 16 NF 1 SET THREAD PLUG GAGE 3.125 GO NO GO P.D.'S = 3.0826 & 3.0716 UNF-1 - DW6692BU

PRATT & WHITNEY

3 1/8 16 N 3A SET THREAD PLUG GAGE 3.125 NO GO ONLY P.D. = 3.0802 CHECK 3.1250