The JBO Thread Plug Gauge (NoGo) is a precision inspection tool designed for metric fine threads. It’s ideal for machinists, inspectors, engineers, and hobbyists who need quick, reliable checks of threaded holes to ensure they meet exact specifications. This NoGo gauge is tailored for M42 x 3 threads with a 6H tolerance and a right-hand orientation, providing consistently accurate measurements in demanding shop environments. Crafted from hardened steel, it offers enduring performance and resistance to wear for long-lasting use.

• Precise metric fine thread verification: Engineered for M42 x 3 threads (6H) with right-hand orientation, delivering exact NoGo checks to confirm hole acceptance against metric fine-thread standards.
• Durable hardened steel construction: Built to withstand daily use and resist wear, helping maintain accuracy and reliability over time.
• Fast, repeatable inspections: Simple pass/fail results with a compact, easy-to-use design that speeds up quality checks and reduces downtime.

Using the JBO NoGo Gauge, you can streamline quality control, minimize rework, and ensure consistent hole dimensions across production runs. Its durable build and clear measurement criteria help reviewers and operators work confidently, delivering reliable results every time.