JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge - Right Hand - 6H - M8 x 1 - Calibrated (DAkkS Calibration) Tiny Tool Inserts paired with a right-hand cutting

paired with a right-hand cutting edge for stable

helps maintain smooth workflow with straightforward tool seating

Taper shank for secure seating: The taper-shank design provides a stable fit in compatible toolholders

Supplied by Toolex Ltd to BS 328/4 and finished to ISO H5 tolerance (-0 +0

005 mm) keeps finished diameters within spec for repeatable results

JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge - Right Hand - 6H - M8 x 1 - Calibrated (DAkkS Calibration) Tiny Tool Inserts paired with a right-hand cuttingThe JBO Plug Gauge Metric Fine (STI) is a precision measuring tool designed to verify metric Screw Thread Inserts (STIs) such as Heli Coil inserts. Built with a right hand orientation and sized for M8 x 1 threads, it carries a 6H tolerance and comes calibrated with DAkkS traceability. This gauge helps quality teams, machinists, and inspectors confirm that inserts meet ANSI ASME metric STI standards, delivering reliable fits and consistent performance