The JBO Thread Ring Gauge (GO) for UNF right-hand threads is a precision inspection tool designed to verify external thread diameters for 5/16 x 24 UNF fasteners. Ideal for machinists, quality control technicians, engineers, and maintenance professionals, it provides a fast, reliable way to confirm that threaded components will assemble correctly and meet required standards.

Crafted from hardened steel, this GO ring gauge delivers lasting durability and wear resistance in busy shops and production lines. Its precise dimensions support repeatable go checks, helping inspectors quickly distinguish conforming parts from out-of-tolerance ones, and it’s built to maintain accuracy even with regular use in challenging environments.

• Durable hardened steel construction: stands up to daily use, resisting wear to maintain accuracy and extend tool life in demanding workshop settings.
• Precisely matched UNF GO gauge for 5/16 x 24 Right-Hand (2A): ensures fast, reliable go checks and consistent results when verifying external threads against standard specifications.
• User-friendly GO geometry for quick checks: enables easy identification of conforming threads, reducing inspection time and supporting smooth quality control workflows.

The gauge integrates seamlessly into standard inspection routines, helping you reduce downtime, lower rework, and deliver dependable threaded components—from manufacturing floors to service bays. With its straightforward use and durable build, you can trust your measurements and keep projects moving with confidence.