The JBO Thread Ring Gauge (GO) for UNC is a precision ring gauge designed to verify external thread diameters on components with 7/8-9 UNC right-hand threads. Its exact Go gauge design supports quick go/no-go checks, helping inspectors and technicians confirm parts meet required standards quickly and consistently.

Manufactured from hardened steel, this gauge delivers durable, long-lasting performance in busy shops. The rugged construction resists wear through countless inspections, while its straightforward design makes it easy to identify conforming threaded components, supporting reliable quality control and efficient manufacturing workflows.

• UNC 7/8 x 9 Go gauge (Right Hand, 3A): Precisely sized Go gauge designed for 7/8-9 UNC right-hand threads, enabling quick go/no-go verification and consistent first-pass results.
• Hardened steel construction: Built from hardened steel to resist wear, maintaining dimensional accuracy and extending gauge life in demanding environments.
• User-friendly inspection: Clear, intuitive geometry and feedback allow operators to quickly determine conforming parts, reducing inspection time and downtime.

Using the JBO Go gauge helps you streamline quality checks, reduce rework, and improve overall throughput. With reliable measurements and durable construction, you’ll experience faster, more confident approvals of threaded components, better first-pass yield, and consistent results across batches in manufacturing, maintenance, and repair operations.