Working Plug Gages for Checking Threaded Holes

GSG

CERTIFIED 3/8 16 UNC 2B THREAD PLUG GAGE .375 GO NO GO P.D.'S = .3344 & .3401 - DW26288TLC

GF GAGE

CERTIFIED 5/16 24 UNF 2B THREAD PLUG GAGE .3125 GO NO GO P.D.'S = .2854 & .2902 - DW26284TLC

REGAL PREMIUM

CERTIFIED 5/16 18 UNC 3B THREAD PLUG GAGE .3125 GO NO GO P.D.'S = .2764 & .2803 - DW26283TLC

G.A. CO.

CERTIFIED 10 32 UNF 3B THREAD PLUG GAGE #10 .190 GO NO GO PD'S = .1697 & .1726 - DW26281TLC

SHOP MADE 2" 20 THREAD PLUG GAGE 2.0 2.00 2.000 2.0000 2"-20 INSPECTION CHECK - DW26209RD

SCHRILLO

4 3/4 12 N THREAD PLUG GAGE 4.75 4.750 4.7500 GO ONLY P.D. = 4.6961 INSPECTION - DW26218RD

PENNOYER DODGE

5 23/32 20 UNS 3B THREAD PLUG GAGE 5.71875 GO ONLY P.D. = 5.6868 3B OR 2B CHECK - DW26220RD

4 1/2 8 N THREAD PLUG GAGE 4.5 4.50 4.500 4.5000 QUALITY INSPECTION UN-2B OR 3B - DW26216RD

4.724 6 NS THREAD PLUG GAGE 4.7240 GO ONLY P.D. = 4.6157 4.724"-6 INSPECTION - DW26219RD

SHOP MADE 2 1/4 8 LEFT HAND THREAD PLUG GAGE 2.25 2.250 2.2500 L.H. INSPECTION - DW26211RD

HANSON WHITNEY

1.100 12 NS 2 THREAD PLUG GAGE 1.1 .10 .100 GO NO GO P.D.'S = 1.0459 & 1.0515 - DW26214RD

PRATT & WHITNEY

3/4 20 NS SPECAL THREAD PLUG GAGE .75 .750 .7500 GO ONLY P.D. = .7130 - DW26208RD