The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, engineered to verify internal holes with confidence. It targets applications that require exact M3.5 x 0.5 thread engagement and a right-hand orientation, delivering quick, reliable checks for production and quality control teams.

With a Go/No-Go design, you can determine at a glance whether a hole meets specification—pass and move forward, or rework and retest—helping keep cycles tight and parts consistent.

• Go/No-Go quick checks: Quickly determine whether the threaded hole accepts the plug gauge within tolerance, reducing inspection time and preventing missed fits.
• Hardened steel construction: Built to withstand repeated use, resist wear, and maintain accurate readings over the life of the tool.
• Right-hand metric fine thread compatibility (M3.5 x 0.5, 6H): Precisely aligned with common internal thread standards, simplifying setup in typical manufacturing environments.

Designed to streamline your inspection workflow, this gauge delivers consistent results across parts and operators. Its durable build minimizes downtime from worn tools, while the Go/No-Go feedback accelerates decision-making during assembly and quality checks. Choose the JBO Thread Plug Gauge for reliable, repeatable measurements that help you prevent misfits, reduce rework, and keep production on schedule.