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04 mm bore finishes
The tool’s durable carbide body resists wear
37mm is an intermediate precision reamer designed to hone drilled holes to ISO H4 tolerance in demanding materials
and consistently high‑quality thread forms on NPT right‑hand parts
reducing the risk of assembly issues and costly rework
JBO Plug Gauge - Metric Fine (STI) Heli Coil Gauge - Right Hand - 6H - M10 x 1 - Calibrated (DAkkS Calibration) Tiny Tool Inserts 04 mm bore finishesThe JBO Plug Gauge Metric Fine (STI) Heli Coil Gauge is a precision measuring tool built to verify metric screw thread inserts (STIs). Right handed and calibrated to a 6H class with M10 x 1 threads, this gauge helps inspectors and technicians quickly confirm that STI inserts meet exact metric specifications. Ideal for manufacturing, automotive, and aerospace QA workflows, it offers reliable, repeatable checks you can trust. Calibrated with DAkkS
