The JBO Thread Ring Gauge (NoGo) — Metric Fine, Right Hand, 4h, M18 x 2 — is a precision inspection tool designed to verify external thread diameters. It’s built for engineers, quality teams, machinists, and workshop technicians who need a reliable way to confirm parts conform to the exact metric fine standard. With its NoGo configuration, you can quickly determine whether a threaded component is within tolerance, enabling fast, confident decisions in your inspection process.

Manufactured from hardened steel, this gauge delivers long-lasting performance in demanding environments. Its meticulously machined dimensions provide consistent measurements, helping you identify non-conforming threads at a glance and maintain strict quality control across production runs.

• Instant NoGo verification: Enables fast pass/fail assessment by testing if the thread diameter exceeds the maximum permissible size, reducing inspection time and rework.
• Durable hardened steel construction: Built to resist wear and maintain accuracy through repeated use, delivering reliable readings over the gauge’s long service life.
• Metric fine threading compatibility (M18 x 2, Right Hand, 4h): Precisely calibrated for metric fine threads with the correct right-hand orientation and 4h tolerance, ensuring accurate checks for standard components.

Using the JBO NoGo gauge helps streamline your quality control workflow, delivering clear, decisive results and supporting consistent measurements across batches. It reduces downtime caused by misfits and provides confidence that threaded assemblies will mate correctly in real-world use, improving overall throughput and reliability.