The JBO Thread Plug Gauge (NoGo) – Metric Fine is a precision measuring tool designed specifically for metric fine threads. It is used to verify threaded holes, helping ensure components meet exact size and tolerance before assembly. Engineered for fast, reliable inspections, this NoGo gauge accelerates quality checks across manufacturing, maintenance, and repair environments.

Manufactured from hardened steel for long-lasting wear resistance, the JBO NoGo gauge keeps its accuracy through repeated use in demanding environments. Its metric fine thread sizing (M90 x 3) and 6H tolerance are engineered to deliver repeatable NoGo checks, helping you quickly identify parts that require adjustment or rework. The right-hand orientation ensures compatibility with standard metric threading, and the compact, knurled body provides secure handling in busy workspaces.

• Metric fine precision for No-Go hole checks: Designed to verify M90 x 3 threaded holes with accurate limit checks, helping you confirm holes meet the specified maximum size without guesswork.
• Durable hardened steel construction: Built to resist wear and maintain accuracy through repeated use in demanding environments, reducing replacement costs and downtime.
• Ergonomic, secure handling with knurled body: The textured surface and compact form provide a confident grip and quick alignment, speeding up inspections in busy shops.

Using the JBO Thread Plug Gauge (NoGo) – Metric Fine supports faster, more reliable quality control. It helps you confirm hole sizes at a glance, minimizes rework, and enhances consistency across parts and operators—contributing to smoother workflows, fewer delays, and improved overall performance in your machining or assembly processes.