The JBO Thread Plug Gauge is a precision inspection tool sized for left-hand Unified threads. Specifically designed for UNC 3/4 x 10 holes and a 2B tolerance, this go/no-go gauge lets quality teams, engineers, and machinists quickly confirm that threaded holes meet the correct standard. Use it to verify proper fitment and reliable performance in manufacturing, automotive, and aerospace applications.

• Go/No-Go Design for Fast Conformance Checks: Quickly determine whether a thread hole meets spec with clear pass/fail feedback, reducing inspection time and eliminating guesswork.
• Left-Hand UNC 3/4 x 10 with 2B Class Verification: Precisely matched to left-hand UNC threads and 2B tolerance to ensure accurate acceptance for this specific thread configuration.
• Durable, Precision-Machined Construction: Built to withstand daily shop use, delivering repeatable measurements and long-term reliability in demanding environments.

By providing a deterministic method to verify thread holes, this gauge helps prevent misfits, reduces assembly delays, and supports consistent part quality. Its straightforward pass/fail feedback enables operators to streamline workflows, minimize downtime, and document inspection results with confidence. Whether you're building aerospace components, automotive assemblies, or high-volume manufactured parts, this gauge delivers reliable, repeatable measurements you can trust.