The JBO Thread Plug Gauge is a UNF Go-No/Go gauge designed to quickly verify internal threads against Unified standards. It helps teams in manufacturing, automotive, and aerospace confirm hole quality with confidence, ensuring parts will assemble correctly and perform reliably.

This Right Hand, 3B gauge for 1 1/2 x 12 UNF threads features dual Go and No-Go ends, making it easy to identify conforming versus non-conforming threads at a glance. Built for frequent use, its durable construction and clear differentiation support fast, repeatable inspections in busy shop environments.

• Go/No-Go design for rapid pass/fail checks: Quickly confirm whether a threaded hole meets the Go limit and reject non-conforming threads, reducing inspection time and rework.
• Precise UNF 1-1/2 x 12, 3B specification: Engineered to the Unified thread standard to ensure accurate hole checks and consistent results across parts and batches.
• Rugged, ergonomic construction with color-coded ends: Knurled body for a secure grip and durable ends, with distinct color markers to clearly indicate Go and No-Go tests for reliable measurements.

Using this gauge helps streamline quality control, minimizes production delays, and supports reliable assembly across critical industries. Its straightforward, go/no-go feedback and solid construction make it a dependable choice for technicians, inspectors, and engineers seeking consistent, confidence-inspiring results.