The JBO UNJC Go-No/Go Thread Plug Gauge is a precise inspection tool designed to quickly verify threaded holes meet Unified thread standards. Built for professionals across manufacturing, automotive, and aerospace, it provides clear, actionable feedback on thread conformity.

This right-hand gauge features a 3B tolerance class and No. 2 x 56 size, delivering reliable go/no-go checks that help you confirm proper thread fit, reduce rework, and maintain consistent quality in high-volume assemblies.

• Go/No-Go simplicity: The intuitive go/no-go design gives you an immediate pass or fail reading, speeding up inspections and minimizing guesswork in the workshop.
• UNJC right-hand precision: Engineered to Unified National Coarse (UNJC) standards, this gauge ensures accurate hole measurement for consistent thread engagement in every part.
• Durable, ergonomic construction: Knurled shaft and robust end sections provide a secure grip and long tool life in busy shop environments, with easy handling for repeated use.

Using the JBO Thread Plug Gauge helps you speed up inspections, cut waste from mis-threaded parts, and maintain consistent thread quality across batches. Its robust design withstands daily shop use, ensuring you can rely on accurate checks from one shift to the next.