The JBO Thread Plug Gauge (NoGo) in Metric Fine is a precision inspection tool designed specifically for metric fine threaded holes. This NoGo gauge helps ensure holes meet exact standards quickly and reliably, making it ideal for engineers, quality teams, machinists, and maintenance technicians who inspect threaded components across a range of industries. Made from high-quality materials like hardened steel, it’s built for durability and long-lasting performance in demanding environments.

• Metric Fine Thread Precision: Designed specifically for metric fine threads, ensuring consistent, accurate hole verification every time.
• Durable Hardened Steel Construction: Built to resist wear and maintain accuracy in busy shops and QC environments, delivering long service life.
• Left-Hand, 6H M56 x 1 NoGo Gauge: Precisely matched to left-hand M56 x 1 threads with 6H tolerance for reliable pass/fail checks.

With this gauge in your toolkit, you can speed up hole inspection, reduce rework, and maintain consistent threading across parts. Its durable build and metric-fine specificity help you trust your measurements, minimize downtime, and support confident decisions in production and quality control.