The JBO Thread Ring Gauge (NoGo) is a precision tool for verifying external UNF threads on fasteners, fittings, and machined components. Designed for right-hand UNF threads in the 2A class, it covers No. 0 x 80 size with a built-in NoGo feature to quickly identify non-conforming threads.

Crafted from hardened steel and finished for durability, this gauge withstands daily workshop use. The knurled outer edge provides a secure grip for precise handling, even with gloves, making inspections fast and repeatable.

• Go/No-Go Quick-Check: Instantly confirm whether external UNF threads meet the 2A class for No. 0 x 80 right-hand threads; reduces inspection time and helps catch nonconforming parts before assembly.
• Hardened Steel Construction: Built to endure routine handling, wear-resistant surfaces maintain dimensional accuracy and extend tool life in automotive, aerospace, and manufacturing environments.
• Ergonomic, Non-Slip Handling: Knurled edge and balanced ring design deliver secure grip and precise control, even when wearing gloves or working in tight spaces.

With the JBO NoGo ring gauge, you gain confidence that every threaded part will fit as intended, speeding up inspections, reducing rework, and improving overall production reliability. Its durable construction and straightforward go/no-go checks support consistent results across teams, helping inspectors and machinists make faster, more informed decisions.