The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external UNC threads. Suited for manufacturing floors, automotive shops, and aerospace inspection labs, it helps technicians confirm that thread diameters meet Unified standards and fit requirements. The NoGo design delivers quick, unmistakable pass/fail indications for in-process parts and final assemblies.

Manufactured from hardened steel, this gauge resists wear and keeps its accuracy after repeated use in busy environments. Its right-hand UNC 2A specification and No. 12 x 24 size ensure you’re testing the exact thread form used in your components, making inspections faster and more reliable.

• No-Go design for quick identification of non-conforming threads: The gauge provides an immediate go/no-go indication, helping inspectors flag out-of-spec parts in the line and reduce potential assembly issues.
• Hardened steel construction for long-lasting durability: Built to withstand daily use in busy workshops, maintaining dimensional accuracy and resisting wear over time.
• UNC – Right Hand – 2A, No. 12 x 24 sizing for consistent verification: Ensures you test the exact thread form used in your components, supporting reliable measurements and standard-compliant inspections.

This tool streamlines your inspection workflow by delivering fast, reliable checks of external threads, reducing downtime and ensuring parts meet spec before they go to assembly or shipping. With the JBO Thread Ring Gauge, you gain confidence in quality control, improve first-pass acceptance, and lower the risk of misfit parts across manufacturing, automotive, and aerospace operations.