The JBO Thread Ring Gauge (GO) is a precision tool for fast, reliable verification of external metric threads. It’s designed for machine shops, manufacturing QA teams, engineers, and skilled technicians who need quick, trustworthy thread checks without slowing down production.

With a metric fine pitch and right-hand orientation, this GO gauge confirms conformance to M90 x 4 standards. Crafted from hardened steel, it offers excellent wear resistance and long service life in demanding environments where accuracy matters most.

• Accurate GO verification for Metric Fine threads: Quickly determine whether an external thread matches the M90 x 4 fine-pitch standard, enabling fast pass/fail decisions and reducing rework.
• Rugged hardened steel construction: Built to withstand daily shop wear, resisting wear and deformation to maintain precise measurements over many cycles.
• User-friendly, right-hand ring gauge design: Intuitive handling and easy identification of conforming components, helping inspectors complete checks in less time with less effort.

In use, this gauge streamlines inspection workflows by delivering clear, repeatable results, supporting tighter tolerances and fewer production delays. Its durable build and clear GO indication help you maintain quality across batches, whether you’re running small precision parts or high-volume components.