The JBO Thread Plug Gauge is a metric fine thread Go/No-Go gauge designed for fast, reliable inspection of threaded holes. It helps machinists, engineers, quality control inspectors, and maintenance teams verify that M33 x 2 holes meet tolerance before assembly.

Built for busy workshops, this right-hand gauge features 6H tolerance and a hardened steel body for long-lasting performance, delivering clear, decisive results every check.

• Go/No-Go design for fast inspection: Quickly determine hole tolerance by testing if the gauge fits (Go) or should not fit (No-Go), enabling rapid, confident decisions and reduced inspection time.
• Hardened steel construction: Provides wear resistance and longevity, maintaining accuracy through frequent use in demanding shop environments.
• Precise M33 x 2, 6H, right-hand sizing: Ensures reliable checks for the common metric fine-thread hole, aligning with standard fasteners and minimizing rework.

With the JBO Thread Plug Gauge, you gain a practical, repeatable method to verify threaded holes, speeding up assembly, reducing downtime, and improving overall quality. Its robust construction and clear Go/No-Go results give you confidence in every measurement, whether you're setting up a production line, performing maintenance, or validating parts during QA checks.