The JBO Thread Ring Gauge NoGo is a precision external thread gauge designed for metric coarse threads. It is specifically calibrated for right-hand M2.3 x 0.4 threads with a 6g tolerance class, making it ideal for QA teams, machine shops, and assembly lines that demand consistent thread validation.

Crafted from hardened steel, the gauge resists wear in tough environments, delivering long life and stable measurements. Its straightforward design allows operators to identify non-conforming threads at a glance, speeding inspections and reducing training time.

• NoGo verification for exact max-diameter checks (M2.3 x 0.4, 6g): Quickly confirms that external threads do not exceed the maximum permitted size, helping to prevent over- or under-sized parts and minimize rework.
• Durable hardened steel construction: Resists wear in busy workshops, maintaining dimensional integrity and delivering reliable performance over many use cycles.
• Clear pass/fail indications for fast decisions: Simple, intuitive use enables quick conformity checks, speeding inspections and reducing downtime.

Designed to support quality control processes, precision engineering, and reliable threaded connections, this JBO NoGo gauge helps you achieve consistent results, improve workflow, and reduce downtime. It provides dependable performance across shifts and jobs, giving you confidence in every measurement.