The JBO Thread Ring Gauge (GO) for UNJF threads is a purpose-built go gauge designed to verify external thread diameters across manufacturing, inspection, and assembly environments. It provides a quick, reliable pass/fail check to confirm that a part with a 5/16 x 24 right-hand UNJF thread meets the GO limit, helping maintain consistent thread quality on the line.

Crafted from hardened steel, this gauge delivers excellent wear resistance and long service life in demanding workshops. Its clear GO face makes it easy to identify properly conforming threaded components at a glance, supporting efficient quality control and precise engineering workflows.

• Go gauge for UNJF external threads: Delivers a fast, dependable pass/fail check for 5/16 x 24 right-hand UNJF threads, speeding inspections and reducing guesswork on the shop floor.
• Hardened steel construction: Built to endure daily use, resisting wear and maintaining dimensional stability for lasting accuracy in busy environments.
• Right-hand 3A tolerance compatibility: Aligns with standard UNJF thread specs to provide consistent, repeatable checks across parts and suppliers, enhancing measurement reliability.

Used by inspectors, machinists, and quality teams, this gauge helps you validate thread compatibility early in the process, streamline setup, and reduce rework. Its precise yet straightforward design supports accurate documentation of conformance, ultimately contributing to faster workflows, improved pass rates, and better overall product quality.