JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge - Right Hand - 6H - M20 x 1.5 - Calibrated (DAkkS Calibration) M&D repeatable trapezoidal threads on tiny

repeatable trapezoidal threads on tiny parts

it delivers stable cutting and clean finishes

the Widin Carbide Corner Radius End Mill delivers precise internal corners and dependable tool life

Finish with a light pass to refine the thread and clear any remaining chips

so fewer reamers are needed over time

JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge - Right Hand - 6H - M20 x 1.5 - Calibrated (DAkkS Calibration) M&D repeatable trapezoidal threads on tinyThe JBO Plug Gauge Metric Fine (STI) is a precision go no go tool designed to verify metric screw thread inserts (STIs). Built for professionals across manufacturing, automotive, and aerospace, it provides quick, reliable checks to ensure metric STI inserts meet exact specifications. This Right Hand gauge is calibrated for M20 x 1. 5 (6H) and carries a DAkkS calibration for traceable, audit ready measurements. Calibrated with DAkkS traceability: DAkkS