The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision inspection tool designed specifically for metric fine threads. This NoGo gauge checks threaded holes to exacting standards, including M65 x 4 with a 6H tolerance, making it an essential part of quality control in machining, fabrication, and assembly environments.

Built for durability, the gauge features a hardened steel construction with a knurled grip for secure handling in busy workshops. Its metric fine design delivers reliable, repeatable measurements, helping you confirm threads meet spec quickly and confidently.

• Metric Fine Thread Compatibility: Designed specifically for metric fine threads, this plug gauge accurately checks internal threads for M65 x 4 with a 6H tolerance, helping you verify hole size quickly and consistently.
• Hardened Steel Construction: Manufactured from hardened steel for exceptional wear resistance, delivering long service life in demanding shop environments and maintaining accuracy over thousands of inspections.
• Right-Hand Go/NoGo Quick-Check: Optimized for standard right-hand threads, the NoGo segment provides a fast, decisive pass/fail check so you can approve or reject parts in seconds, reducing downtime and rework.

With the JBO Thread Plug Gauge, your team gains a clear, reliable method to verify hole threads before assembly, speeding up QA processes and minimizing guesswork. The tool’s sturdy construction and ergonomic grip support consistent results across shifts, while its compact, single-tool design keeps your gauge kit organized and ready for every job.