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repeatable hole finishing in professional workshops
helping screws sit flush with the surface
smooth surfaces and repeatable results on HRc70 alloys
A straight shank ensures reliable seating and straightforward setup in standard drilling and boring machines
JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M12 x 0.5 Face Mill Arbors repeatable hole finishing in professionalThe JBO Thread Plug Gauge is a left hand, metric fine thread Go No Go gauge designed for precise inspection of threaded holesspecifically M12 x 0. 5 with 6H tolerance. It helps engineering teams, machine shops, and maintenance crews quickly confirm that holes will accept mating parts without guesswork, boosting first pass quality in every run. Go No Go quick checks: A simple pass fail test for threaded holes lets you verify acceptance in seconds,
