The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. Specifically crafted for M39 x 0.75 applications, this right-hand, Go/No-Go gauge helps shops verify threaded holes quickly and reliably. It’s ideal for machinists, assembly lines, and QA teams that need fast, accurate fits without guesswork.

Made from hardened steel for exceptional durability, this plug gauge resists wear and maintains accurate measurements through repeated use in busy workshop environments.

• Go/No-Go quick verification: Quickly determine if a threaded hole meets spec, enabling fast decisions on accept or reject and reducing inspection time and rework.
• Metric fine-thread precision (M39 x 0.75) with right-hand orientation: Designed for the exact size and handedness used in precision assemblies, ensuring reliable checks for tight tolerance holes.
• Rugged hardened steel construction: Built to endure daily use, resist wear, and preserve measurement accuracy over time for consistent results across production runs.

Using the JBO Thread Plug Gauge helps streamline quality checks, improve workflow, and safeguard assembly performance. Its durable construction and precise Go/No-Go design give you confidence that each threaded connection will perform as intended, from first shift to last.