The JBO Thread Ring Gauge (GO) – Metric Fine, Right Hand, 6h, M42 x 1.5 is a precision tool designed to quickly verify external thread diameters. Built for engineers, inspectors, and workshop technicians, it provides reliable go/no-go checks to confirm parts meet the M42 x 1.5 thread specification.

Crafted from hardened steel, this gauge offers exceptional durability for daily use in demanding environments. Its GO design, clear sizing, and right-hand orientation make it easy to use with standard threaded components, supporting accurate quality control across production and assembly lines.

• Precise metric fine-thread verification: Quickly confirm external threads against the M42 x 1.5 GO limit, enabling fast go/no-go decisions and reducing inspection time.
• Durable hardened steel construction: Built to withstand frequent use in busy shops, resisting wear and maintaining accuracy over many cycles.
• Right-hand orientation with 6h tolerance: Standardized for common right-hand thread profiles, ensuring consistent, repeatable results across parts and operators.

Using this gauge helps speed up inspections, reduce downtime, and improve consistency across lots. It supports straightforward pass/fail decisions, simplifies training for new operators, and ensures repeatable results for critical threads like M42 x 1.5. With its durable construction and precise fit, you can rely on it to uphold quality standards now and into the future.