The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision inspection tool designed to verify metric fine threaded holes with reliability. It’s ideal for machinists, quality inspectors, and assembly teams who need fast, accurate go/no-go checks to ensure parts meet exact thread standards.

This Right Hand gauge targets M64 x 1 threads and uses 6H tolerance. Crafted from hardened steel, it delivers durable, wear-resistant performance that holds its accuracy through demanding everyday use in the workshop.

• Precise metric fine thread validation: Quickly verify that M64 x 1 holes meet the required thread fit, helping you catch undersize or oversize threads at the first operation.
• Durable hardened steel construction: Built to stand up to daily shop use, resisting wear and maintaining consistent measurements over time.
• Consistent right-hand NoGo gauge with 6H tolerance: Provides reliable, repeatable checks across batches, reducing rework and smoothing QA workflows.

With the JBO Metric Fine NoGo gauge, your inspection process becomes faster and more dependable. It helps ensure threaded components are within spec, minimizes guesswork, and supports tighter quality control without slowing production. The durable design means fewer replacements and less downtime, so your team can focus on delivering accurate, high-quality parts with confidence.