The JBO Thread Ring Gauge (NoGo) — Metric Fine, Left Hand, 6g, M38 x 1.5 — is a precision NoGo gauge designed to verify external LH-threaded components. It’s ideal for engineers, machinists, inspectors, and quality teams who need quick, reliable checks that confirm parts meet the NoGo limit and stay within specification.

Manufactured from hardened steel, this gauge delivers lasting durability in busy workshop environments. Its straightforward design makes it easy to identify non-conforming threads at a glance, supporting consistent quality across production runs and simplifying daily inspection routines.

• Precise NoGo Fit for M38x1.5 LH Threads: Quickly verify the external thread diameter against the NoGo limit for metric fine LH threads, delivering clear go/no-go results in seconds.
• Hardened Steel Construction for Longevity: Built to resist wear and corrosion, providing dependable performance across thousands of inspections in demanding settings.
• Ergonomic, Easy-to-Use Design: Knurled edge and smooth mating surfaces enable fast alignment and repeatable readings, even in tight or cluttered workspaces.

Using the JBO Thread Ring Gauge enhances your quality workflow by reducing inspection time, minimizing guesswork, and improving first-pass acceptance of threaded parts. It helps protect downstream processes, lowers rework, and supports consistent, reliable results across every batch.