The JBO Thread Ring Gauge (GO) – Metric Coarse, Right Hand, 4h, M6 x 1 is a precision inspection tool designed to verify external threads on metric coarse fasteners and components. Ideal for quality control teams, machine shops, and assembly operations, it provides quick, reliable go/no-go checks to ensure parts meet exact size and tolerance requirements for proper mating and performance.

Built from hardened steel, this GO gauge delivers durability and long-lasting accuracy in demanding environments. Its tightly controlled dimensions support consistent results across routine inspections, calibration tasks, and process QA, helping you maintain compliant, high-quality assemblies.

• Hardened steel construction: Built to endure daily use in workshop environments, delivering superior wear resistance and long tool life so you can rely on consistent measurements over time.
• Precise GO gauge for metric coarse threads: Specifically calibrated for M6 x 1, 4h, right-hand threads to ensure accurate, pass/fail checks on external threads and correct mating with nuts and bolts.
• Easy, repeatable inspections: Simple to use right out of the box with clear sizing, speeding up QC tasks and reducing rework through reliable, repeatable results.

With the JBO Thread Ring Gauge, you gain a fast, reliable go/no-go test for external metric coarse threads, helping you confirm fit and function at a glance. The rugged hardened-steel build stands up to daily use in QC labs and workshop floors, while the precise M6 x 1 (4h, right-hand) sizing reduces rework and keeps assemblies moving on schedule. By delivering consistent measurements and easy checks, this gauge supports tighter quality control, better supplier conformity, and smoother final assembly across your production line.