1/2 - 20

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

YOU ARE PURCHASING THE PICTURED BEFORE PLATE THREAD RING GAGES.SOLD BY M & J TOOLING LLCDAYTON, OHIOPRODUCT SPECIFICATIONS AND / OR LABELING:CONDITION:USEDSIZE:1/2 - 20 UNF - 2A BEFORE PLATEGO P.D.:.4634NO GO P.D.:.4599MANUFACTURER /...

BAY STATE

1/2 20 UNF 2A MOD BEFORE PLATE SET THREAD PLUG GAGE .5 GO NO GO PDS .4650 .4611

YOU ARE PURCHASING THE PICTURED MODIFIED BEFORE PLATE SET THREAD PLUG GAGE.THESE GAGES ARE USED FOR CALIBRATING THREAD RING GAGES ONLY! THEY ARE NOT USED FOR CHECKING THREADED HOLES IN A MACHINED PART!SOLD BY M & J TOOLING...