The JBO Thread Plug Gauge is a metric fine thread Go/No-Go gauge designed for right-hand threads, precisely sized M34 x 2 with a 6H tolerance. It’s built to verify threaded holes quickly and reliably, helping you confirm a proper fit during assembly and quality checks.

Crafted from hardened steel for long-lasting performance, this gauge delivers consistent measurements in busy workshops, QA labs, or field environments. It’s an ideal tool for engineers, machinists, maintenance teams, and hobbyists who need dependable thread verification without guesswork.

• Go/No-Go design for fast, binary inspection: Quickly confirm hole threads meet spec—“Go” should fit, while the “No-Go” end must not—reducing inspection time and downtime.
• Metric fine-thread precision (M34 x 2, 6H): Specifically tuned for metric fine threads, ensuring reliable checks and consistent results across components and assemblies.
• Durable hardened steel with knurled grip: Built for longevity and easy handling in demanding environments, delivering repeatable measurements even after heavy use.

Use this gauge to streamline quality control, speed up setup, and minimize rework. Its precise Go/No-Go checks, combined with durable construction, help you achieve tighter tolerances, faster throughput, and better overall performance in any threading workflow.