JBO Thread Ring Gauge (NoGo) – Metric Coarse, Right Hand, 4h, M3.5 x 0.6 is a precision inspection tool designed to verify the external thread diameter of metric coarse fasteners and components. Built for engineers, machinists, quality inspectors, and assembly teams, it helps you quickly determine whether a part meets the specified M3.5 x 0.6 thread standard.

Crafted from hardened steel, it withstands frequent use in busy workshops and production lines. The NoGo designation provides a clear pass/fail check, supporting consistent, compliant thread quality across batches and reducing rework.

• Durable hardened steel construction: Built to endure daily use in busy shops, resisting wear to maintain accurate gauging over thousands of inspections.
• Precise NoGo sizing for quick checks: Specifically calibrated for metric coarse right-hand threads (M3.5 x 0.6) to deliver fast, reliable pass/fail verification of external threads.
• Easy, repeatable inspections: Simple alignment with parts and clear geometry support fast setup, reducing inspection time and measurement variation.

Using the JBO NoGo Ring Gauge helps you keep production on track by catching non-conforming threads early, minimizing downtime, and ensuring that metric coarse threaded connections meet required standards for fit and function. Whether you're conducting incoming inspections, in-process checks, or final quality control, this gauge provides consistent results and confidence in every measurement.