The JBO Thread Ring Gauge (NoGo) for Metric Fine threads is a dedicated inspection tool designed to verify external thread diameters with reliable precision. Sized for M56 x 1 (6g) right-hand threads, it’s ideal for manufacturers, machinists, quality control teams, and maintenance technicians who need fast, repeatable go/no-go checks to confirm parts meet specification.

Constructed from hardened steel for long life, this gauge resists wear in busy workshops and maintains tight tolerances through repeated use. A knurled outer edge provides a secure grip for quick setup, while a subtle red index mark helps you align and read results at a glance, keeping inspections consistent across operators.

• No-Go quick verification: The NoGo capability lets you quickly confirm whether a thread is out of tolerance—if the part threads onto the gauge past the no-go limit, it’s rejected, enabling rapid pass/fail decisions in quality control.
• Hardened steel for durability: Built to endure daily use in metalworking environments, the gauge resists wear, deformation, and corrosion, delivering stable measurements over time.
• Precise metric fine M56 x 1 right-hand threading (6g): Engineered to exact external-thread dimensions in the metric fine series, this gauge provides repeatable checks and is compatible with standard assembly practices, reducing rework and mounting errors.

Using this gauge streamlines your inspection workflow: it yields fast, confident decisions on threaded parts, minimizes guesswork, and reduces downtime from rework. With durable construction and precise dimensions, you’ll rely on it across many jobs, improving consistency, traceability, and overall quality in your production or maintenance processes.