The JBO Thread Ring Gauge (NoGo) is a precision measuring tool designed to verify external thread sizes on bolts, shafts, and threaded components. It’s built for engineers, machinists, inspectors, and quality teams who need fast, reliable checks to confirm parts meet Unified thread standards.

This NoGo gauge features a trapezoidal, right-hand thread profile in 7e tolerance (Tr. 26 x 5) and is crafted from hardened steel for durability in busy workshops. The design provides a clear, quick indication of non-conforming threads, helping you catch mismatches early in your production or inspection process.

• NoGo Quick Conformance Check: The NoGo design lets inspectors rapidly identify non-conforming threads—if the gauge threads onto a part beyond the acceptable limit, it fails the fit, enabling fast, decisive pass/fail decisions.
• Hardened Steel Construction: Built to endure daily shop use, the ring gauge resists wear, corrosion, and impact, delivering long service life even in high-volume environments.
• Precise Trapezoidal Right-Hand 7e Gauge: Accurate geometry and tight tolerances ensure repeatable measurements that align with standard thread specifications, reducing rework and ensuring consistent results.

In practice, this gauge streamlines your quality checks across manufacturing, automotive, and aerospace parts. It supports faster inspections, minimizes downtime, and provides clear evidence of compliance for audits and supplier reviews—helping you maintain tight control over thread integrity and assembly performance.