The JBO Thread Plug Gauge is a precision inspection tool designed specifically for metric fine threads. It’s ideal for machinists, quality control professionals, and assembly teams who need quick, reliable verification of threaded holes to ensure parts fit together with confidence.

Built for right-hand M1.6 x 0.2 fine threads and configured for 4H hole tolerance, this gauge combines a hardened steel construction with a comfortable, knurled grip for secure handling during setup and inspection. The Go/No-Go design delivers fast, clear pass/fail results, helping you move parts through quality checks without guesswork.

• Go/No-Go verification for fast decisions: Enables immediate pass/fail checks on threaded holes, reducing inspection time and preventing incorrect assemblies.
• Hardened steel for durable performance: Withstands repeated use in busy workshops while maintaining accurate readings and long service life.
• Metric fine thread compatibility (M1.6 x 0.2, 4H, Right Hand): Precisely tailored to the specified fine-thread size and tolerance class, ensuring reliable measurement and consistent results across parts.

Using this gauge helps streamline your QA workflow, minimizes downtime, and delivers repeatable thread verification that supports accurate assembly and higher-quality outcomes from part to part.