The JBO Thread Ring Gauge (NoGo) for Metric Fine threads is a precision inspection tool designed for manufacturers, maintenance teams, and quality control professionals. It verifies external threads, specifically M20 x 0.75 left-hand threads in the 6g tolerance class, helping ensure components meet exact size limits with confidence.

Built for durability and repeated use, this NoGo gauge resists wear in busy environments, reducing replacement costs and downtime while delivering consistent, reliable checks across shifts and teams.

• Metric Fine NoGo for M20 x 0.75 (Left-Hand, 6g): Quickly indicates when an external thread exceeds the maximum size, enabling fast rejection of out-of-tolerance parts and preventing downstream assembly issues.
• Left-Hand Thread Compatibility: Specifically designed for left-handed threads, ensuring accurate measurements without confusion or the need for multiple gauges.
• Hardened Steel, Durable Construction: Built to endure everyday workshop use with wear-resistant geometry, preserving dimensional accuracy and extending gauge life.

Using the JBO Thread Ring Gauge NoGo streamlines quality control, helping you accelerate inspections, reduce downtime, and consistently meet thread specifications in demanding production environments.