The JBO Thread Plug Gauge is a precision Go/No‑Go gauge designed for metric fine threads. Specifically calibrated for right‑hand M14 x 0.75 holes in 6G tolerance, it helps machinists, inspectors, and hobbyists verify thread quality quickly and confidently.

Built from hardened steel, this gauge stands up to regular use in production or maintenance settings, resisting wear and maintaining accuracy over time so you can rely on repeatable checks batch after batch.

• Go/No-Go quick checks: The gauge lets you verify both the minimum and maximum material conditions in one step, so you can confirm that a threaded hole will accept and finish to spec without guesswork, reducing rework and downtime.
• Hardened steel for long-lasting accuracy: Built to withstand repeated insertions and removal, the hardened steel construction resists wear and corrosion, preserving dimensional stability for reliable readings over many uses.
• Metric fine-thread compatibility: M14 x 0.75, right-hand, 6G: Precisely matched to the standard metric fine-thread format, ensuring consistent checks for mating parts and helping maintain tight tolerances across assemblies.

With the JBO Thread Plug Gauge, you gain a straightforward, dependable tool that speeds up your inspection process, minimizes guesswork, and supports consistent, high-quality thread fits from first part to last. Its durable build and precise sizing give you confidence in every measurement, whether you’re in a busy workshop, a quality control lab, or a DIY bench.