Inch

S.C.C.

5/16 24 NF 2 UNDERSIZE .003 THREAD RING GAGES .3125 GO NO GO P.D.'S= .2824 .2791

S.C.C.

5 40 UNC 2A .003 UNDERSIZE THREAD RING GAGES #5 .125 GO NO GO P.D.'S .1050 .1024

HEMCO

1/4 20 NC 3 LEFT HAND THREAD RING GAGE .25 GO ONLY P.D. = .2175 L.H. LH .250-20

R & K TOOL

1/4 28 UNF 2A PREPLATE THREAD RING GAGE .25 NO GO ONLY P.D. = .2198 B/P P.P.

PMC INDUSTRIES

7/16 32 UN 3A THREAD RING GAGE .4375 GO ONLY P.D. = .4172 7/16-32 N-3A QUALITY

HANSON WHITNEY

7/16 20 NF 3 MODIFIED THREAD RING GAGES .4375 GO NO GO P.D.'S = .4062 & .4020

G.A. CO.

8 32 UNC 2A PREPLATE THREAD RING GAGES #8 .164 GO NO GO P.D.'S = .1426 & .1387

G.A. CO.

8 32 UNC 2A PREPLATE THREAD RING GAGES #8 .164 GO NO GO P.D.'S = .1416 & .1387

G.A. CO.

1/4 20 UNC 2A PREPLATE THREAD RING GAGES .25 GO NO GO P.D.'S = .2150 & .2120

WD

3/8 12 STUB ACME LEFT HAND THREAD RING GAGES .375 GO NO GO P.D.'S= .3233 & .3183

7/16 15 NS 2 LEFT HAND TRIPLE LEAD THREAD RING GAGES .4375 GO NO GO .3942 .3895

HANSON WHITNEY

6 32 NC SPECIAL PITCH THREAD RING GAGE #6 .138 GO ONLY P.D. = .1110 #6-32 UNC