The JBO Thread Ring Gauge (NoGo) is a precision inspection tool for external metric threads. It is designed for M20 x 1 threads with a metric fine pitch, right-hand orientation, and 4h tolerance, helping engineers, inspectors, and shop teams quickly verify that threaded components meet exact size requirements.

• Hardened steel construction: Built for durability, it resists wear and maintains accurate dimensions even in demanding daily use in busy workshops.
• Precise metric fine sizing (M20 x 1) with 4h tolerance: Delivers reliable, repeatable checks of external threads to ensure parts conform to exact standards.
• Easy, intuitive Go/NoGo testing: Enables fast identification of non-conforming parts with clear visual feedback, and the right-hand orientation supports efficient testing in typical inspection setups.

Using this gauge helps streamline quality control by delivering fast, dependable checks on threaded components, reducing rework and mis-shipments. Its durable construction and precise sizing provide consistent results across batches, strengthening confidence in your manufacturing or assembly processes.