JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric coarse threads. This right-hand gauge covers M1.2 x 0.25 threads with 4H tolerance, enabling fast, reliable verification of threaded holes and ensuring correct fit during assembly.

Its rugged hardened steel construction is built for daily workshop use, providing repeatable checks across shifts and operators. Ideal for engineers, machinists, inspectors, and maintenance teams, it helps streamline quality control and reduce rework by delivering clear pass/fail results.

• Go/No-Go design for fast hole checks: Quickly confirm whether a threaded hole accepts the mating thread to spec, reducing guesswork and rework and speeding up QC and assembly.
• Hardened steel durability: Withstands rigorous use and resists wear, helping maintain accuracy and extending service life in busy shop environments.
• Metric coarse size, right-hand, 4H tolerance: Standardized M1.2 x 0.25/thread geometry in a right-hand gauge ensures reliable fit across common metric holes and consistent results.

Using this gauge, you can verify hole threads quickly, maintain consistent results across parts, and reduce downtime due to misfits. The go/no-go approach provides immediate confidence in every measurement, supporting efficient production, straightforward quality assurance, and improved overall performance.