The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision tool designed to verify internal threads in metric fine sizes. It targets right-hand threads with 6G tolerance and a size of M42 x 1.5, helping inspectors and machinists confirm that threaded holes meet the required fit. Built for reliable performance in daily use, this gauge enables quick, repeatable checks that support consistent quality control across parts and assemblies.

Made from hardened steel, the gauge is durable and resistant to wear, ensuring long service life even in busy workshops, maintenance bays, and production lines. The NoGo designation provides a clear, fast way to validate holes during setup and in-process checks, reducing guesswork and rework.

• Metric Fine precision geometry: Engineered for metric fine threads to deliver accurate hole checks, helping you quickly identify undersize or oversize threads and reduce rework.
• Durable hardened steel construction: Built to resist wear, corrosion, and daily handling, ensuring long life in demanding environments.
• Right-Hand 6G NoGo design for fast validation: Simple go/no-go checks that speed up inspection cycles and provide repeatable, consistent results.

With the JBO NoGo Metric Fine Thread Plug Gauge, you gain confidence in every threaded component you inspect. It speeds up setup, strengthens quality control, and minimizes downtime by catching out-of-tolerance holes early in the process. The combination of precise geometry and rugged materials ensures dependable performance across production runs, maintenance tasks, and field service, helping you deliver consistent, high-quality results.