The JBO Thread Plug Gauge is a metric fine thread Go/No-Go gauge designed to verify internal threads with precision. Specifically tailored for M29 x 1 threads in 6H tolerance, this right-hand gauge helps technicians, inspectors, and machinists confirm hole readiness and ensure smooth, reliable assemblies. It’s ideal for quality control in manufacturing, maintenance, and repair tasks where accurate threading is critical.

• Go/No-Go, Dual-Ended Verification: Quickly confirms whether the M29 x 1 internal thread hole meets both the go and no-go limits, speeding setup and reducing guesswork in quality control.
• Hardened Steel Construction: Built to endure daily shop use, resisting wear and maintaining accuracy over thousands of insertions for long service life.
• Right-Hand Metric Fine Thread Compatibility: Specifically matched to standard right-hand M29 x 1 threads, ensuring reliable, repeatable checks with easy handling thanks to the knurled grip and dual-ended design.

With the JBO Thread Plug Gauge, you’ll streamline threaded-hole inspections, minimize rework, and ensure consistent fit across components. Its hardened-steel body stands up to busy workshop environments, while the dual-ended Go/No-Go design delivers clear, rapid pass/fail results—helping you boost productivity without compromising precision.