The JBO Thread Ring Gauge (GO) - Metric Fine - Right Hand - 4h - M39 x 2 is a precision inspection tool designed to verify external threads on components with metric fine threads. Its GO gauge provides a quick pass/fail check to ensure parts thread cleanly into mating fittings, making it ideal for manufacturing, maintenance, and quality control.

• Accurate GO Check for Metric Fine Threads: Quickly verify external thread diameters against the M39 x 2 GO limit, delivering fast, reliable acceptance or rejection at the workbench or on the shop floor.
• Hardened Steel Construction for Durability: Built to resist wear in busy environments, providing long service life and reduced replacement costs over time.
• User-Friendly, Right-Hand Design with 4h Class Fit: Easy to use in tight spaces with consistent engagement, ensuring repeatable results across production runs.

Using this GO ring gauge helps streamline quality checks, minimize guesswork, and ensure every part with M39 x 2 threads meets required standards. Its robust construction supports reliable performance through high-volume inspections, while clear go/no-go feedback speeds decision-making and enhances traceability in quality records.