The JBO Thread Ring Gauge (GO) - Metric Fine is a precision tool designed to verify the outer thread diameter of metric fine-threaded components. It is ideal for engineers, machinists, quality inspectors, and workshop technicians who need fast, reliable go/no-go verification.

Built as a GO gauge for right-hand threads with M4 x 0.5 pitch and 4h tolerance, it supports accurate assessment of components against standards. Crafted from hardened steel, it delivers durability and wear resistance for long service in demanding environments.

• Go gauge for M4 x 0.5 right-hand threads: Quickly confirm whether a component's external thread diameter conforms to the specification, reducing inspection time and guesswork.
• Hardened steel construction for long life: Resists wear and maintains precision through daily use in busy workshops, delivering reliable performance over time.
• User-friendly design for quick verifications: Intuitive handling and clear alignment enable fast, confident go/no-go checks, supporting consistent quality across parts and batches.

With the JBO Thread Ring Gauge in your toolkit, you can streamline QC workflows, cut inspection downtime, and ensure every threaded part meets strict standards. The durable design and precise GO face deliver dependable results that you can trust across multiple shifts and projects.