The JBO Thread Ring Gauge (GO) for UNJC is a precision go gauge designed to verify external thread diameters to the UNJC standard. Sized for right-hand 3B threads in 5/16 x 18, it provides reliable go/no-go checks that help inspectors confirm conformity quickly during inspection and assembly.

Manufactured from hardened steel, it resists wear and delivers long service life in demanding workshops, QC labs, and production floors. Its simple, intuitive design makes it easy to identify conforming components at a glance, supporting efficient quality control and precision engineering.

• Accurate Go/No-Go verification: Delivers immediate pass/fail feedback for external UNJC Right-Hand 3B 5/16 x 18 threads, helping inspectors confirm conformity without guesswork.
• Hardened steel construction: Resists wear and deformation under repeated use, maintaining precise dimensions and extending gauge life for daily-demand environments.
• User-friendly, quick-read design: Clear geometry and straightforward orientation allow fast checks, reducing inspection time and minimizing setup errors.

Using this ring gauge helps streamline quality control by delivering reliable, repeatable measurements that support consistent thread fits across parts and assemblies. It reduces downtime from rework, speeds up inspections on the shop floor, and gives teams confidence in their dimensional checks thanks to durable construction and precise tolerances baked into every gauge.