The JBO Thread Plug Gauge is a precision tool engineered for metric fine threads, designed to verify threaded holes quickly and accurately. With a knurled, ergonomic body and dual ends, it fits comfortably in hand for fast Go/No-Go checks. This right-hand gauge in 6H tolerance is crafted from hardened steel to stand up to daily shop use while delivering repeatable results for M12 x 1.5 fine threads.

The Go/No-Go design lets you confirm both the minimum and maximum thread dimensions in seconds, accelerating inspections and helping parts mate correctly on first assembly.

• Go/No-Go quick checks: Quickly verify whether the hole threads meet both the minimum and maximum limits, speeding up in-process inspections and reducing downtime.
• Durable hardened steel: Built to last under regular use in shop environments, resisting wear and maintaining accuracy over time.
• Right-hand, metric fine-thread fit: Precisely sized for M12 x 1.5 holes, delivering consistent Go/No-Go results for fine-thread assemblies.

This plug gauge helps you maintain tight tolerances, speeds up quality checks, and ensures components assemble correctly on first use, reducing downtime and scrap. By offering clear pass/fail feedback, it supports reliable production workflows and consistent performance across your toolkit and fixtures.