The JBO Thread Plug Gauge (GO) is a precise go gauge designed to quickly verify internal UNC threads. Tailored for right-hand threads and 2B tolerance, it helps ensure threaded holes conform to Unified thread standards with a clear pass/fail indication.

Whether you’re in manufacturing, automotive, aerospace, or a busy machine shop, this GO gauge provides reliable, repeatable measurements that support quality control and proper assembly. The go design makes it easy to identify correctly formed threads at a glance, helping you reduce rework and ensure proper fitment and performance in critical components.

• Go design for fast, decisive checks: Enables quick verification of acceptable threads, reducing inspection time while delivering dependable results in high-volume settings.
• UNC Right Hand, 2B tolerance: Precisely matched to Unified thread standards to deliver consistent, repeatable measurements across parts and suppliers.
• Durable, precision-machined construction: Built to withstand daily shop use, preserving accuracy through repeated insertions and everyday handling.

Using the JBO GO gauge helps streamline your inspection workflow, minimizes guesswork, and supports consistent thread quality across batches. It provides a straightforward, trustworthy method to confirm proper thread engagement, enhancing overall part performance and reducing downtime in production and assembly environments.