The JBO Thread Ring Gauge (GO) for UNEF right-hand threads, size 13/16 x 20, class 2A, is a precision tool designed to verify external thread diameters with confidence. It’s ideal for machinists, quality control inspectors, engineers, and workshop technicians who need fast, reliable go/no-go checks to confirm parts meet UNEF standards.

Crafted from hardened steel, this GO ring gauge delivers durability and lasting accuracy in demanding environments. Its straightforward design makes it easy to identify properly conformed threaded components during routine inspections, helping you maintain consistent quality across production runs.

• Precise UNEF GO reference for right-hand threads: Specifically matched to UNEF 2A 13/16 x 20, providing a reliable go/no-go benchmark for external threads.
• Hardened steel construction: Built to resist wear and maintain tight tolerances even after heavy, repeated use in busy workshop environments.
• Easy handling and quick checks: Knurled outer edge and smooth bore enable fast placement, alignment, and confident pass/fail readings during inspections.

This gauge helps you quickly verify that external threads meet specification, streamlining quality control and reducing rework. By delivering clear, repeatable results, it supports efficient workflows and enhances overall accuracy in precision projects.