The JBO Thread Plug Gauge (NoGo) — Metric Fine is a precision measuring tool designed specifically for metric fine threads, helping engineers, machinists, and inspectors quickly verify the accuracy of threaded holes. It is tailored for right-hand use with a 6G tolerance class and an M42 x 2 size, providing reliable checks that keep your parts in spec and your production moving smoothly.

• Exact metric fine NoGo verification: Delivers a precise NoGo limit for M42 x 2 holes, enabling fast, reliable identification of undersize or oversize threads during inspection to prevent misfits in assembly.
• Rugged hardened steel construction: Built to endure daily use in busy workshops, resisting wear and maintaining measurement accuracy over time for long tool life.
• Ergonomic knurled body for easy use: The textured grip and clear orientation support secure handling and quick, repeatable checks with minimal effort.

This gauge supports streamlined quality control by accelerating hole verification, reducing rework, and improving confidence in threaded assemblies. Its durable design and no-fuss handling help teams stay productive during routine inspections and demanding production runs.