The JBO Thread Plug Gauge (NoGo) – Metric Fine is a precision inspection tool designed to verify internal threads in metric fine applications. It's ideal for engineers, machinists, quality inspectors, and shop technicians who need fast, reliable checks to ensure holes meet specification.

Constructed from hardened steel for durability, the gauge combines a precise NoGo measurement with a left-hand thread orientation and the M78 x 2 size (6H tolerance). Built to withstand daily wear, it delivers consistent performance across demanding workshop environments.

• Precision for Metric Fine Threads: Specifically designed to check metric fine thread holes, providing accurate NoGo results you can trust for critical components.
• Durable Hardened Steel Construction: Wear- and corrosion-resistant build that stands up to busy workshop use and long service life.
• Left-Hand Configuration (M78 x 2, 6H): Ensures reliable verification of left-hand threaded holes with exact size and tolerance, helping reduce setup time and inspection errors.

Using this gauge supports faster quality control, minimizes rework, and ensures consistent fit across parts. Its precise dimensions and rugged design give your team confidence in every measurement, improving inspection throughput and overall production reliability.