The JBO Thread Ring Gauge (GO) - UNC - Right Hand - 2A - 5/8 x 11 is a precision tool designed to quickly verify external thread diameters against the UNC 5/8 x 11 standard. It’s ideal for technicians, inspectors, engineers, and machinists who need fast, reliable confirmation that threaded parts meet specification.

Crafted from hardened steel, this GO gauge resists wear in demanding environments and maintains its dimensional accuracy over time. Its simple, intuitive design makes it easy to use on busy shop floors, quality labs, or field service sites, helping you identify properly conformed threads at a glance.

• Exact UNC 5/8 x 11 GO specification: Provides a quick, unambiguous pass/fail check for external threads, helping inspectors confirm parts meet the precise size and pitch required.
• Hardened steel construction: Delivers long-lasting durability and wear resistance in daily use, reducing replacement needs and maintenance downtime.
• Right Hand, 2A tolerance class: Ensures consistent performance with standard UNC threads, supporting reliable, repeatable inspections in busy production environments.

By combining precision, durability, and ease of use, the JBO GO Gauge streamlines quality control, cuts inspection time, and helps ensure threaded components fit and perform as intended across assemblies and equipment. It supports consistent results, reduces rework, and contributes to smoother workflows in manufacturing, maintenance, and repair operations.