JBO Thread Plug Gauge is a precision Go/No-Go tool designed for metric fine threads. Its simple pass/fail design makes it ideal for machinists, inspectors, and assembly teams needing fast, confident checks of threaded holes.

This right-hand gauge covers common fine-thread specs such as M1.4 x 0.2 with 5H hole tolerance, providing a reliable gauge for aligning parts and validating thread quality. Made from hardened steel, it resists wear for long service life in busy workshops.

• Rapid Go/No-Go checks: Quickly determine if a threaded hole meets the 5H tolerance, reducing inspection time and preventing misfits.
• Hardened steel, wear‑resistant: Built to endure daily shop use with minimal wear, preserving accuracy over thousands of checks.
• Metric fine thread compatibility (M1.4 x 0.2, Right Hand): Precisely matches common fine-thread specs, simplifying setup and eliminating guesswork during assembly.

Using this gauge streamlines quality control and reduces downtime: you spend less time chasing misfits and more time on productive work. Accurate Go/No-Go readings help you maintain consistent assembly results, prevent costly rework, and uphold tight tolerances across your production line. With durable construction and precise threading compatibility, you can trust it to perform reliably project after project.