ISO H4 precision finish: Finishes holes to ISO H4 tolerance under DIN 8089
this tool resists wear and maintains stability through more cutting cycles
it’s optimized for demanding machining tasks where accuracy matters
Taper shank for secure mounting: Fits standard tool holders with stable seating
it delivers smooth reaming performance and long tool life
JBO Thread Plug Gauge - Metric Fine Go/No-Go - Right Hand - 6G - M11 x 0.5 S&E ISO H4 precision finish: FinishesThe JBO Thread Plug Gauge is a precision tool for metric fine thread holes, built for machinists, engineers, quality teams, and hobbyists who need consistent, reliable checks. This right hand, 6G class gauge is specifically sized for M11 x 0. 5 threads, delivering accurate go no go results to speed up setup and prevent misfits. Go No Go design for fast, reliable checks: Quickly determine if a bore is within tolerance, reducing inspection time and