The JBO Thread Plug Gauge is a precision inspection tool designed to quickly verify internal threads in holes and threaded components. Built for use across manufacturing, automotive, and aerospace environments, it helps ensure parts conform to Unified thread standards with reliable, repeatable results. Our Go/No-Go design provides clear, at-a-glance pass/fail feedback, so technicians can confirm proper fitment without guesswork.

• Go/No-Go quick conformance check: Immediate pass/fail indications for the 1 1/4 x 8 UNS right-hand thread, enabling fast, accurate verification and reduced inspection time.
• Durable, ergonomic knurled body: Rugged construction with a secure grip in busy workshops, plus color cues near the ends to help you orient the gauge quickly and efficiently.
• Precise 2B internal thread tolerance: Engineered to strict internal-thread tolerance (2B) for consistent measurements and reliable compatibility across assemblies.

Using the JBO Thread Plug Gauge streamlines quality control by delivering fast, dependable thread acceptance checks. Its robust design supports repeated use in demanding environments, helping reduce downtime, minimize rework, and improve overall threading accuracy in your production workflow.