The JBO Thread Ring Gauge (NoGo) UNC Right Hand 2A No. 5 x 40 is a precision inspection tool designed to verify external threads to Unified thread standards. It’s ideal for engineers, machinists, inspectors, and quality teams across manufacturing, automotive, and aerospace sectors. Use it to confirm that threaded components meet exact UNC specifications quickly and consistently.

Its NoGo design lets you instantly identify non-conforming threads, speeding up inspections and helping prevent incorrect parts from progressing in production. Crafted from hardened steel, this gauge resists wear in demanding workshop environments, preserving accuracy over many uses.

• No-Go Quick-Check Design: Quickly flags out-of-tolerance threads to speed up pass/fail decisions and reduce inspection downtime.
• UNC 2A Right-Hand Compatibility: Precisely matched to standard UNC right-hand threads (No. 5 x 40) for reliable, repeatable measurements.
• Hardened Steel Construction: Built to endure routine handling and rigorous use, delivering long-lasting accuracy and repeated reliability.

This gauge supports streamlined quality control by providing clear, dependable verification of external thread diameters, helping you maintain proper fitment, reduce rework, and ensure consistent results across parts and assemblies.