The JBO Thread Ring Gauge (NoGo) is a precision inspection tool designed to verify external UNF threads with confidence. Sized for a 9/16-18 UNF, right-hand thread and class 3A, it helps quality teams quickly confirm whether a threaded part meets the Unified Thread Standard. The NoGo profile provides an immediate, visual indication of non-conforming threads, making pass/fail decisions fast and reliable on the shop floor.

• NoGo design for rapid, unambiguous checks: Quickly identify non-conforming threads and reduce inspection time with a clear, misfit-free indication, helping maintain throughput without sacrificing accuracy.
• Exact UNF 9/16-18 right-hand, 3A threading: Delivers precise engagement and repeatable measurements aligned to the standard, ensuring consistent acceptance criteria across components.
• Hardened steel construction for durability: Built to withstand daily use in manufacturing, automotive, and aerospace environments, maintaining accuracy and tool life even with frequent handling.

With the JBO Thread Ring Gauge, you gain a reliable, easy-to-use instrument that integrates seamlessly into routine quality checks, accelerates decision-making, and supports consistent, standards-compliant assembly across demanding applications.