The JBO Thread Plug Gauge (NoGo) for Metric Fine threads is a precision inspection tool designed to verify the size and fit of metric fine threaded holes. It’s ideal for right-hand threads such as M80 x 1 and is used by machinists, quality control technicians, toolmakers, and assembly teams to quickly confirm holes meet the required limits.

With 6H tolerance in mind, this NoGo gauge delivers repeatable, reliable checks in busy workshop environments, reducing guesswork and rework while helping ensure parts meet spec consistently.

• Metric Fine thread precision: Engineered specifically for metric fine threads (like M80 x 1), delivering accurate, repeatable hole-size checks that align with standard 6H tolerances.
• Rugged hardened steel construction: Built to endure daily use with a knurled grip for secure handling and long-lasting wear resistance in demanding shop conditions.
• Go/NoGo-style inspection: Provides quick, confident checks to determine if a hole is within spec, helping reduce downtime and minimize rework in QC and manufacturing workflows.

Using the JBO Metric Fine NoGo Thread Plug Gauge helps streamline inspection of metric fine threaded holes, delivering clear pass/fail decisions and reducing rework. Its precise dimensions and durable build support consistent results across operators, making it a reliable addition to any machining, assembly, or quality control process.