The JBO Thread Plug Gauge (UNF Go-No/Go, Left Hand, 2B, No. 8 x 36) is a precision tool designed to verify threaded holes for UNF compatibility. Its compact, rugged construction makes it well-suited for engineers, machinists, buyers, and technicians in manufacturing, automotive, and aerospace environments.

The Go-No/Go design provides quick, definitive feedback on whether a hole conforms to Unified thread standards, helping ensure proper fit and reliable performance in assemblies. The left-hand configuration is tailored for testing left-handed threads, preventing misfit and cross-threading during assembly or maintenance.

• Go/No-Go UNF verification: Delivers fast pass/fail checks for UNF threads, speeding inspections and reducing guesswork.
• Left-hand thread compatibility: Specifically designed to test left-handed threads, ensuring accurate checks and proper fitment.
• Durable, precise construction: Rugged metal body with a knurled grip for secure handling and reliable measurements in busy shop environments, No. 8 x 36 size with 2B tolerance for consistent results.

Using the gauge simplifies thread inspections on the shop floor by providing an immediate go/no-go signal for UNF threads. This reduces setup time, minimizes the risk of cross-threading, and supports consistent quality across production runs. Whether you’re configuring an assembly line, performing in-process checks, or scheduling maintenance, the JBO Thread Plug Gauge offers dependable, straightforward results you can trust.