The JBO Thread Plug Gauge (NoGo) - Metric Fine is a precision inspection tool designed to verify metric fine threaded holes. It targets right-hand M135 x 4 threads and uses the NoGo limit to confirm holes meet the required size. This gauge is ideal for quality control, manufacturing, and maintenance teams who need quick, reliable checks to keep components in spec.

Made from hardened steel, the gauge delivers lasting durability and wear resistance in busy workshops. Its knurled body provides a secure grip for precise handling, even when your hands are wearing gloves.

• NoGo limit design for metric fine threads: Provides a fast, definitive check against the NoGo limit for M135 x 4 threads, helping prevent undersized holes from passing inspection and reducing rework.
• Hardened steel construction for lasting accuracy: Built to resist wear in busy workshops, this gauge retains measurement integrity through thousands of uses and harsh environments.
• Right-hand orientation with standard 6H/M135 x 4 compatibility: Designed to align with common metric fine hole setups, enabling quick setup and consistent results with your existing gauging tools.

By delivering quick, binary NoGo readings for M135 x 4 metric fine holes, this gauge speeds up inspection, reduces guesswork, and helps prevent misfits in assembly. Its durable construction and secure, glove-friendly grip support accurate checks in QA labs, on the shop floor, or in field service, helping you maintain consistent quality and minimize downtime.