The JBO Thread Plug Gauge is a precision Go/No-Go tool designed to verify internal metric threads in holes. Specifically engineered for metric fine threads, it's ideal for applications where accurate threading matters, including M8 x 1 right-hand holes set to 6H tolerance. This gauge helps you confirm correct thread acceptance quickly during setup and quality checks.

Constructed from hardened steel, the gauge delivers long-lasting performance and wear resistance in demanding workshop environments. The knurled grip provides secure handling for repeated insertions and removals, making inspections faster and more reliable in busy production settings.

• Go/No-Go design for fast checks: Quickly determine if a threaded hole is within tolerance—the go end accepts a correct M8 x 1 thread, while the no-go end reveals out-of-spec holes—saving time and reducing guesswork.
• M8 x 1 right-hand, 6H compatibility: Precisely tuned for metric fine threads and common hole tolerance, ensuring consistent fits with standard components and assemblies.
• Hardened steel with knurled grip: Durable, wear-resistant construction paired with a secure, comfortable grip for repeatable inspections in demanding environments.

Using this gauge helps streamline your workflow by delivering reliable, quick pass/fail results, reducing misfits and rework, and supporting consistent tolerances across production runs. It’s a dependable tool for machinists, quality inspectors, and maintenance teams who need trustworthy thread validation without slowing down the job.