The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision measuring tool designed to verify metric fine threaded holes with confidence. It’s ideal for engineers, machinists, inspectors, and DIY enthusiasts who need reliable go/no-go checks in everyday quality control.

Designed as a No-Go gauge for metric fine threads, this tool ensures holes meet exact size and fit by providing clear pass/fail results. The Right Hand orientation, 6H class, and M140 x 3 size align with common thread standards, while hardened-steel construction stands up to demanding shop environments.

• Metric Fine precision: Specifically designed for metric fine threads to deliver accurate hole measurements and reliable pass/fail results in inspection routines.
• Hardened steel durability: Built to withstand daily use in busy workshops, resisting wear to maintain accuracy over time.
• Right-hand M140 x 3, 6H sizing: Precisely sized for standard metric holes, enabling quick, repeatable NoGo checks and consistent results across parts.

Using the JBO Thread Plug Gauge (NoGo) makes thread inspection straightforward: you can quickly verify hole size and thread fit, catch out-of-tolerance parts before assembly, and keep production moving with predictable results. With a rugged hardened-steel build and precise dimensions, it delivers repeatable performance across shifts and environments, helping you reduce downtime and rework while maintaining consistent quality.