The JBO Thread Plug Gauge (NoGo) for Metric Fine threads is a precision inspection tool designed to verify internal holes with metric fine threads. Specifically suited to quality control, machining, and assembly environments, it helps you quickly confirm hole size and reject out-of-tolerance parts before they move further in production.

Built for durability, this gauge uses hardened steel and a robust knurled body for easy handling and long service life. The Left Hand configuration, combined with the M56 x 2 size and 6H tolerance, ensures reliable, repeatable checks on left-hand threaded components and metric fine holes.

• Metric Fine M56 x 2 NoGo gauge: precisely sized to verify internal metric fine threads and help you identify holes that are out of spec, reducing rework and misfits.
• Left-Hand design: optimized for inspections of left-hand threaded components, ensuring correct orientation and faster pass/fail decisions.
• Hardened steel construction: designed to withstand daily shop use, resisting wear to maintain accuracy over many measurements.

With the JBO Thread Plug Gauge, you gain confidence in every measurement. Quick and repeatable checks speed up your inspection process, lower scrap rates, and improve overall part quality. The durable construction means fewer replacements and less downtime, keeping production moving smoothly and consistently across batches.