The JBO Thread Ring Gauge (NoGo) is a precision tool designed for inspecting external metric threads. Built for right-hand, fine-pitched threads, it helps technicians and inspectors quickly confirm that threaded parts meet the required size and tolerance.

Crafted from hardened steel, this NoGo gauge delivers durability and long life in demanding work environments. Its ring format and clear sizing help identify non-conforming components at a glance, supporting consistent, reliable measurements in quality control, machining, and assembly processes. It is designed for metric fine threads, including M4 x 0.25 with 6h considerations.

• Go/No-Go quick checks: Provides fast pass/fail verification for external threads, reducing inspection time and minimizing the chance of accepting out-of-spec parts.
• Hardened steel construction: Delivers excellent wear resistance and durability, maintaining accurate measurements through frequent use on busy shop floors.
• Ergonomic, knurled design: The textured edge ensures a secure grip and easy alignment, even when wearing gloves, helping you position the gauge precisely every time.

Incorporating the JBO Thread Ring Gauge into your workflow streamlines quality checks, improves consistency across inspections, and supports reliable assembly with correctly sized fasteners. Its robust build and clear, user-friendly design help you reduce downtime, prevent rework, and maintain confidence in your metrology results.