The JBO Thread Plug Gauge is a precision tool for inspecting metric fine threaded holes. Designed for engineers, machinists, buyers, tradespeople, and hobbyists, it ensures M10 x 1.25 holes meet the correct size and thread form. Its Go/No-Go design lets you quickly verify fit during assembly or quality checks, keeping projects on track.

Constructed from hardened steel, this gauge offers durability that stands up to daily workshop use and repeated measurements. The right-hand orientation and 6G class provide reliable reference for fine-thread holes, with long-lasting performance and wear resistance.

• Go/No-Go Quick Verification: Enables fast pass/fail checks of threaded holes, reducing downtime and rework for faster, more reliable inspections.
• Metric Fine Thread Compatibility (M10 x 1.25, Right-Hand, 6G): Precisely matches the metric fine thread standard, ensuring consistent mating and dependable measurement results.
• Hardened Steel Durability: Built to endure busy shop environments, resisting wear and corrosion to maintain accuracy over time.

Using the JBO Thread Plug Gauge helps you confirm thread quality with confidence, streamline your inspection workflow, and improve assembly accuracy. Its durable construction and clear go/no-go thresholds support steady, high-quality results across projects and shifts.