3 1/2 - 12

HEMCO

3 1/2 12 STUB ACME 2G THREAD PLUG GAGE 3.5 GO ONLY P.D. = 3.4750 3.50 3.500 - DW10494BHTX

PENNOYER DODGE

3 1/2 12 UN 3B LEFT HAND THREAD PLUG GAGE 3.5 NO GO ONLY P.D. = 3.4522 L.H. - DW8482RD

WESTPORT

3 1/2 12 UNJ 3B LEFT HAND THREAD PLUG GAGE 3.5 GO NO GO P.D.'S = 3.4459 & 3.4522 - DW7523BU

HEMCO

BUDGET 3 1/2 12 UN 3B THREAD PLUG GAGE 3.5 GO ONLY P.D. = 3.4459 N-3B 3 1/2"-12 - DW5415BU

BUDGET 3 1/2 12 UN 3B THREAD PLUG GAGE 3.5 NO GO ONLY P.D. = 3.4522 3.50 UNJ-3B

MERCURY

3 1/2 12 UNJ 3B BEFORE PLATE THREAD PLUG GAGE 3.5 GO ONLY P.D. = 3.4471 3.50 UN

THREAD CHECK

CERTIFIED 3 1/2 12 UN 2B LEFT HAND THREAD PLUG GAGE 3.5 GO NO GO 3.4459 & 3.4543

WRIGHT AERO CORP.

3 1/2 12 NS THREAD PLUG GAGE 3.5 NO GO ONLY P.D. = 3.4499 REVERSIBLE QUALITY