Inch

3/4 20 NEF BEFORE PLATE THREAD RING GAGE .75 GO ONLY P.D. = .7163 NON STD. B/P

GTD

7/8 20 USF THREAD RING GAGE .875 GO ONLY P.D. = .8425 U.S.F. .8750-20 INSPECTION

11/16 16 NS THREAD RING GAGE .6875 GO ONLY P.D. = .6495 11/16-16 NS-2 NS-3 UNS

S.C.C.

3/8 16 UNC 2A PREPLATE THREAD RING GAGES .375 GO NO GO P.D.'S= .3319 & .3275 P/P

CERTIFIED 3/8 16 UNC 3A THREAD RING GAGES .375 GO NO GO P.D.'S = .3344 & .3311

GAGE ASSEMBLY CO.

CERTIFIED 3/8 24 UNF 3A LEFT HAND THREAD RING GAGES .375 GO NO GO= .3479 & .3450

THREAD CHECK

CERTIFIED 5 40 UNC 2A THREAD RING GAGES #5 .125 GO NO GO P.D.'S = .1080 & .1054

PIPE MACHINERY CO.

1/2 50 UNS 2A THREAD RING GAGES .5 GO NO GO P.D.'S = .4860 & .4827 1/2-50 NS-2A

S.G. CO.

15/16 20 UNEF 3A THREAD RING GAGE .9375 NO GO ONLY P.D. = .9016 NEF-3A QUALITY

THREADCHECK

CERTIFIED 1 1/8 16 UN 3A THREAD RING GAGES 1.125 GO NO GO PD'S = 1.0844 & 1.0807

MERCURY

1/2 13 NC SPECIAL PITCH THREAD RING GAGE .5 NO GO ONLY P.D. = .4500 .50-13 0.500

GTD

4 36 NS 3 THREAD RING GAGES #4 .112 GO NO GO P.D.'S = .0940 & .0922 4-36 NS-3