JBO Plug Gauge - Metric (STI) Heli Coil Gauge - Right Hand - 6H - M4 x 0.7 - Calibrated (DAkkS Calibration) Power Milling Chucks supports efficient workflows and high-quality

supports efficient workflows and high-quality bore finishes in production or workshop environments

Variable index geometry for smoother cuts: Distributes cutting edges to reduce peak forces and enhance chip evacuation

this reamer resists wear and maintains its edge under demanding use

maintain calibration

this reamer delivers tight size control for dependable fits in precision assemblies

JBO Plug Gauge - Metric (STI) Heli Coil Gauge - Right Hand - 6H - M4 x 0.7 - Calibrated (DAkkS Calibration) Power Milling Chucks supports efficient workflows and high-qualityThe JBO Plug Gauge Metric (STI) Heli Coil Gauge Right Hand 6H M4 x 0. 7 Calibrated (DAkkS Calibration) is a precision measurement tool designed to verify metric Screw Thread Inserts (STIs). Built for engineers, inspectors, and shop floor technicians across manufacturing, automotive, and aerospace environments, it delivers quick, reliable go no go checks that confirm inserts meet exact M4 x 0. 7 dimensions and STI standards. Manufactured and assessed