The JBO Thread Plug Gauge (GO) is a precision inspection tool built to verify internal metric threads quickly and reliably. Sized for M56 x 2 holes and tuned to the metric fine pitch, this Right Hand GO gauge aligns with the 6H internal thread tolerance to confirm proper engagement, helping machinists, inspectors, and quality teams ensure threaded holes meet exact specifications.

Crafted from hardened steel, the gauge resists wear in demanding shop environments, delivering long-lasting performance and dimensional stability. Its simple Go-side design makes it easy to use: just insert into the threaded hole to validate proper thread form and engagement, supporting consistent quality control across parts and production runs.

• Accurate Go gauge for M56 x 2 internal threads: Quickly confirms holes accept a properly formed thread, speeding inspection and reducing guesswork in QC workflows.
• Hardened steel construction for durability: Withstands daily use in busy workshops, resisting wear and maintaining precise dimensions over time.
• Right-hand, metric fine specification for consistency: Aligns with standard right-hand thread practice and fine-pitch tolerances to deliver reliable, repeatable results.

Using the JBO Thread Plug Gauge (GO) helps streamline your quality process by enabling fast, confident thread acceptance checks. It reduces rework, speeds up production checks, and supports consistent results across parts and operators — giving you a reliable tool you can trust in busy manufacturing, assembly, and maintenance environments.