The JBO Thread Plug Gauge (NoGo) is a precision tool designed for metric fine threads, specifically configured for left-hand M78 x 1.5 holes to the 6H tolerance. It’s ideal for inspectors, machine shops, and maintenance teams who need quick, reliable verification of threaded holes to ensure proper fit and performance.

• Precision metric fine thread verification: accurate, repeatable Go/NoGo checks for M78 x 1.5 holes, aligned with 6H tolerance to support consistent assembly and quality control.
• Durable hardened steel construction: built to withstand daily use in demanding environments, providing long-lasting measurement reliability and reduced wear.
• Left-hand NoGo design for fast validation: specifically configured for left-hand threads, enabling rapid, confident verification without guesswork.

Incorporating this gauge into your inspection routine helps streamline quality checks, reduce rework, and ensure threaded holes meet exact specifications. The rugged construction and precise dimensions deliver dependable performance over time, giving you confidence in every measurement and every assembly.