Designed for metric coarse threads, the JBO Thread Plug Gauge provides fast, reliable go/no-go checks of threaded holes. Ideal for machinists, inspectors, and maintenance teams, it ensures M8 x 1.25 coarse-thread holes meet specification for reliable assembly and operation.

• Go/No-Go Inspection Design: Quickly determine acceptance—pass (Go) means the hole is within tolerance, fail (No-Go) means it needs adjustment. This simple, hands-on check speeds setup and reduces guesswork on tolerances.
• Hardened Steel Construction: Built to withstand daily use in busy shops; wear resistance preserves accuracy, prolonging tool life and reducing replacement costs.
• Right-Hand Metric Coarse Thread Compatibility (M8 x 1.25, 6G): Specifically matched to standard coarse-thread holes, ensuring consistent measurements and compatibility with common components and fixtures.

Using this gauge helps you streamline quality checks, improve assembly confidence, and minimize downtime. The rugged construction and clear go/no-go criteria deliver reliable results across production, maintenance, and field service environments, making it a dependable addition to any machining or inspection toolkit.