The JBO Thread Ring Gauge (GO) – Metric Fine, Right Hand, M115 x 4 is a precision tool designed to verify external thread diameters quickly and reliably. It’s ideal for machine shops, automotive and aerospace maintenance, quality control labs, and serious hobbyists who need confident, on-the-spot thread checks to ensure parts meet the M115 x 4 standard.

Crafted from hardened steel, this GO gauge delivers outstanding durability and wear resistance in busy environments. Its straightforward design makes it easy to identify properly conforming threaded components at a glance, helping you speed inspections without sacrificing accuracy.

• Precise metric fine GO verification: Enables quick pass/fail decisions for external M115 x 4 threads, reducing rework and keeping production flowing smoothly.
• Hardened steel construction for durability: Built to resist wear, corrosion, and deformation, delivering long service life in demanding workshop conditions.
• Ergonomic and easy to read: Simple, intuitive use with clear engagement to speed checks and minimize operator errors.

This gauge helps streamline your quality workflow by delivering consistent, repeatable results that you can trust across multiple parts and projects. By enabling faster inspections and reliable compliance with thread standards, it supports better fit, higher assembly quality, and reduced downtime in everyday operations.