The JBO Thread Ring Gauge (NoGo) is a precision external-thread checking tool sized for metric fine threads, specifically M20 x 0.5, with 6g tolerance and right-hand engagement. It helps inspectors, machinists, and quality teams quickly verify that threaded components meet exact size requirements. This hardened-steel NoGo gauge delivers durable, repeatable performance in busy workshops, resisting wear and reducing rework by clearly flagging non-conforming threads.

• Durable hardened steel construction: Built to withstand daily use in demanding environments, delivering long tool life and reliable performance over time.
• Metric fine, 6g Right-Hand NoGo design: Precisely sized for M20 x 0.5 threads with 6g tolerance and right-hand engagement for accurate go/no-go verification.
• Fast, easy go/no-go inspection: Enables quick sorting of compliant vs non-conforming parts, speeding up quality checks and improving workflow.

With this gauge, you gain fast, repeatable measurements that help you pass parts at first check, minimize downtime, and keep assemblies running smoothly. The hardened steel body resists wear through long service life, while the clear go/no-go feedback provides confidence to operators and quality teams across every shift.