The JBO Thread Plug Gauge (GO) – Metric Fine is a precision inspection tool designed to verify internal threads in holes quickly and reliably. This GO gauge checks metric threads in the M75 x 1.5 size with a right-hand orientation and 6H tolerance, making it ideal for quality control teams, machinists, and assembly technicians who need fast, repeatable pass/fail readings.

Crafted from hardened steel, the gauge resists wear in busy workshop environments and maintains accuracy over many cycles. The metric fine threading and 6H tolerance class deliver consistent results, helping you confirm that threaded holes meet exact standards with minimal downtime.

• Precise GO verification for fast quality checks: Quickly confirm that a threaded hole accepts the GO limit, delivering clear pass/fail readings that shorten inspection cycles and reduce rework.
• Hardened steel construction for durability: Built to withstand daily use in demanding shop environments, maintaining accuracy and extending tool life even after many insertions and extractions.
• Ergonomic, easy-to-use design: Knurled, hand-friendly profile provides secure grip and straightforward alignment, enabling repeatable checks with less effort and fewer handling errors.

The JBO GO plug gauge helps you streamline threaded-hole inspection, improve measurement consistency, and shorten throughput times across manufacturing, maintenance, and repair workflows. Rely on a simple, trustworthy tool that makes precision checking a routine part of your process.