The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. Sized for M27 x 1 right-hand threads with a 6H tolerance, it delivers fast, reliable checks to confirm hole readiness before assembly or mating parts. The Go/No-Go design allows you to verify both tolerance limits in seconds with minimal training, helping you avoid misfits and rework.

Built to endure daily shop use, this gauge uses hardened steel for outstanding wear resistance and longevity. The knurled body provides a secure grip and precise handling, while the compact, dual-ended design clearly indicates go and no-go limits for repeatable measurements across shifts and operators.

• Go/No-Go quick checks: Validate minimum and maximum thread limits in seconds, speeding setup and reducing guesswork.
• Hardened steel construction: Delivers long tool life and reliable performance in busy environments, resisting wear and corrosion.
• Right-hand M27 x 1, 6H tolerance: Ensures accurate, repeatable fits with mating components and consistency across inspection procedures.

With the JBO Thread Plug Gauge, you gain faster, more confident quality checks, smoother assembly workflows, and fewer unexpected issues in production or maintenance. It’s a practical, dependable instrument for engineers, machinists, and technicians who demand precise threading verification without slowing down the job.