The JBO Thread Ring Gauge (NoGo) - Metric Fine - Right Hand - 6g - M40 x 3 is a precision external-thread checking tool designed to verify that threaded components meet size requirements. It’s ideal for engineers, inspectors, machinists, buyers, and workshop teams who need fast, reliable verification of metric fine threads.

Built from hardened steel for durability, this gauge resists wear in demanding environments. The NoGo design provides a clear pass/fail signal for identifying oversized or out-of-tolerance threads, helping quality-control teams reduce rework and keep assemblies within spec.

• Metric Fine, Right-Hand NoGo Ring Gauge (M40 x 3, 6g): Quickly confirms external metric fine threads are within the maximum limit for M40 x 3 right-handed threads, providing a clear pass/fail signal to speed up inspection and reduce guesswork.
• Hardened Steel Construction for Durability: Built to withstand daily use in busy shops, maintaining accurate readings and resisting wear over time for long service life.
• User-Friendly Go/NoGo Indication and Secure Grip: The precision ring design and knurled edge allow fast, confident positioning on parts, with a clear NoGo condition that flags out-of-tolerance components at a glance.

Using this gauge gives inspectors a fast, repeatable method to verify thread size, reduces inspection time, and improves consistency across assemblies. The rugged hardened-steel construction minimizes tool replacement and downtime, helping teams work efficiently and maintain high-quality results throughout production runs.