The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision inspection tool designed to verify metric fine threaded holes with accuracy and ease. Specifically calibrated for right-hand threads in size M70 x 3 and 6H tolerance, this NoGo plug gauge helps quality teams, machinists, and inspectors confirm holes meet exact specifications in automotive, industrial manufacturing, and general machining environments.

• NoGo gauge for strict tolerance verification: Tests the upper limit of the threaded hole to ensure it does not exceed the maximum allowed size, helping you catch out-of-tolerance parts before assembly.
• Durable hardened steel construction: Built to withstand daily use in busy workshops, resisting wear and delivering reliable performance over time.
• Precise metric fine-thread calibration (M70 x 3) with 6H tolerance: Specifically designed for metric fine threads, ensuring consistent, repeatable results with a clear go/no-go indication for reliable inspections.

This gauge supports faster, more confident inspections by providing a clear, repeatable reference for hole size and thread fit. Its rugged construction and precise calibration help you reduce rework, shorten setup times, and maintain high-quality standards across production runs.