The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external thread diameters to Unified thread standards. Built for engineers, quality teams, machinists, and inspectors in manufacturing, automotive, and aerospace environments, it provides fast, reliable checks of UNC threads to ensure proper fit and function.

With its NoGo design, it quickly flags non-conforming threads while you inspect parts, helping prevent assemblies with out-of-tolerance joints. Crafted from hardened steel, the gauge resists wear in busy workshops and maintains accuracy through repeated use.

• NoGo quick-check design: The NoGo design lets you instantly identify oversize or out-of-tolerance threads, reducing inspection time and preventing incorrect fittings.
• Hardened steel construction: Built to endure daily shop use, offering lasting wear resistance and consistent measurements.
• UNC 1/2 x 13, Right Hand, 2A precision: Specifically sized to standard UNC threads, delivering reliable verification for common components and easy cross-check with other gauges.

Using the JBO Thread Ring Gauge (NoGo) streamlines your quality workflow by delivering fast go/no-go assessments, reducing downtime, and improving first-pass acceptance. Reliable, repeatable measurements help you maintain consistent thread quality, minimize rework, and confirm compliance before parts move to assembly or shipment.