Inch

GTD

5/16 32 NS 3 THREAD RING GAGES .3125 GO NO GO P.D.'S = .2922 & .2898 UNS-3 TOOL

PRATT & WHITNEY

3/4 20 NEF MODIFIED THREAD RING GAGE .75 GO ONLY P.D. = .7175 UNEF 3/4-20 2 3 3A

PRATT & WHITNEY

7 36 NS 2 THREAD RING GAGES #7 .151 GO NO GO P.D.'S = .1330 & .1305 UNS-2 TOOL

4 48 UNJF 3A THREAD RING GAGE #4 .112 NO GO ONLY P.D. = .0967 INSPECTION QUALITY

9/16 18 NF 1 THREAD RING GAGES .5625 GO NO GO P.D.'S = .5248 & .5191 UNF-1 TOOL

METRO

6 40 NF LEFT HAND THREAD RING GAGE #6 .138 GO ONLY P.D. = .1218 L.H. QUALITY

MARSHFIELD GAGE CO.

5/16 40 NS 2 THREAD RING GAGE .3125 NO GO ONLY P.D. = .2930 UNS-2 5/16"-40 TOOL

6 40 UNF 3A LEFT HAND THREAD RING GAGE #6 .138 GO ONLY P.D. = .1218 L.H. NF 2 3

BURDICK

1 1/4 32 NS 2 THREAD RING GAGE 1.25 GO ONLY P.D. = 1.2297 UNS-2 1.250"-32 TOOL

INGRAM

1 5/8 16 UN 1A THREAD RING GAGES 1.625 GO NO GO P.D.'S = 1.5828 & 1.5749 TOOL

TAFT-PEIRCE

1 9/16 32 NS THREAD RING GAGES 1.5625 GO NO GO P.D.'S = 1.5422 & 1.5398 TOOL

WINTER

1 5/16 18 NEF THREAD RING GAGE 1.3125 GO ONLY P.D. = 1.2764 1 5/16"-18 UNEF 3A