JBO Plug Gauge - Metric (STI) Heli Coil Gauge - Right Hand - 6H - M7 x 1 - Calibrated (DAkkS Calibration) Power Milling Chucks ground with a 3

ground with a 3

centered drill hole

Bottoming lead: enables full-thread depth to the bottom of the hole for maximum engagement and strength

and the M2 HSS construction delivers reliable wear resistance for longer tool life in demanding finishing passes

Coating: Uncoated surface to allow direct contact with the workpiece and reliable cutting performance

JBO Plug Gauge - Metric (STI) Heli Coil Gauge - Right Hand - 6H - M7 x 1 - Calibrated (DAkkS Calibration) Power Milling Chucks ground with a 3The JBO Plug Gauge Metric (STI) Right Hand, 6H, M7 x 1, Calibrated with DAkkS is a precision inspection tool designed to verify metric screw thread inserts (STIs) used across manufacturing, automotive, and aerospace environments. Built to ANSI ASME standards, this gauge provides reliable, repeatable measurements with a traceable calibration, giving QA teams and technicians the confidence they need on the shop floor. Exact Metric STI fit (M7 x 1):