The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external metric coarse threads. Calibrated for M42 x 4.5 with a 6g tolerance and a right-hand thread, it helps inspectors, machinists, and quality teams quickly confirm that threaded components meet the required size and fit. Designed for busy shops, this NoGo gauge streamlines go/no-go checks, supporting consistent, reliable results across production and inspection tasks.

• Precise NoGo verification for M42 x 4.5 (6g): Engineered to the NoGo limit for this metric coarse thread, it quickly reveals whether external threads are within tolerance, helping you reject undersize or oversized parts at a glance.
• Hardened steel construction for durability: Built to withstand daily shop use, with wear resistance that preserves accuracy and extends the gauge's life in demanding environments.
• Right-hand orientation and intuitive use: Designed for standard RH threads and easy alignment, enabling fast, consistent inspections and reduced operator errors.

Using the JBO Thread Ring Gauge (NoGo) helps you streamline quality control, speed up inspections, and improve assembly reliability. By delivering quick, confident pass/fail decisions on metric coarse threads, it minimizes downtime, reduces rework, and ensures parts mate correctly with corresponding components, delivering consistently predictable results in manufacturing, machining, and assembly workflows.