1/2 - 20

P&W

1/2 20 NF 2 LEFT HAND SET THREAD PLUG GAGE .5 NO GO ONLY P.D. = .4639 L.H. .50 - DW12102RD

1/2 20 NF 3 LEFT HAND SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4675 & .4649 - DW12062AC1

1/2 20 UNC 2A PREPLATE SET THREAD PLUG GAGE .5 GO ONLY P.D. = .4626 NC-2A CHECK - DW8595BU

1/2 20 UNF 3A BEFORE PLATE SET THREAD PLUG GAGE .5 GO ONLY P.D.= .4669 NF-3A B/P

GAGE ASSEMBLY CO.

1/2 20 UNF SPECIAL EXTENDED REACH SET THREAD PLUG GAGE .5 GO ONLY P.D. = .4717

1/2 20 NF 2 STUD BOLT SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4675 & .4639

HEMCO

1/2 20 BEFORE PLATE SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4649 & .4606

1/2 20 UNF 2A BEFORE PLATE SET THREAD PLUG GAGE .5 GO NO GO PD'S = .4634 & .4599

PIPE MACHINERY CO.

1/2 20 NF 2 HILO SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4675 & .4639 CHECK

THE PIPE MACHINERY CO.

1/2 20 NF 3 HILO SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4675 & .4649 CHECK

S.C.C.

1/2 20 UNF 3A LEFT HAND SET THREAD PLUG GAGE .5 NO GO ONLY P.D. = .4643 LH NF-3A

POUCHER

1/2 20 UNF 3A SET THREAD PLUG GAGE .5 GO NO GO P.D.'S = .4675 & .4643 NF-3A