The JBO Thread Plug Gauge is a UNC Go-No/Go plug gauge designed to verify internal threads quickly and reliably. It is specified for right-hand threads, class 3B, No. 3 x 48, making it a precise tool for validating threaded holes to Unified thread standards. This gauge is an essential aid in setups where accurate thread inspection matters, from assembly lines to maintenance bays.

• Go/No-Go quick checks: The dedicated go and no-go ends deliverInstant, decisive pass/fail feedback, accelerating quality inspections and reducing guesswork during assembly.
• UNC Right-Hand, 3B class precision: Built to the Unified Thread Standard for reliable, repeatable results on common No. 3 threads, helping ensure threads meet exact specifications every time.
• Durable, user‑friendly construction: Robust metal body with knurled grip and color‑coded ends for easy orientation and long service life in busy workshops.

Using the JBO Thread Plug Gauge streamlines thread inspection, supports faster setup and tighter quality control, and helps ensure proper fitment across parts and assemblies. It reduces downtime from rework, improves consistency across inspections, and gives teams confidence that threaded holes meet specification on first check.