The JBO Thread Plug Gauge is a precision go/no-go tool designed for quick, reliable inspection of UNF threaded holes. It’s ideal for manufacturing, automotive, and aerospace environments where accurate thread verification matters. With a right-hand 1-1/2 x 12 UNF thread and a 2B tolerance, it delivers clear, actionable feedback on whether threads conform to spec.

• Go/No-Go quick checks: The two ends provide instant verification of both the minimum and maximum acceptable thread limits, allowing you to identify non-conforming holes in seconds and reduce rework and scrap.
• Rugged, knurled construction for reliable handling: A durable, textured grip and sturdy ends resist slipping in busy shops, enabling repeatable measurements even in tough working conditions.
• Standard UNF size and class for consistency: Sized to UNF 1-1/2 x 12 right-hand threads with a 2B tolerance, ensuring reliable results that align with common specifications and fit seamlessly into existing inspection routines.

The JBO Thread Plug Gauge helps technicians, quality engineers, and shop teams quickly verify thread quality, streamline assemblies, and maintain consistent results across parts and batches. Built for durability and ease of use, it supports precise decisions, reduces downtime, and improves overall measurement reliability in demanding environments.