The JBO Thread Plug Gauge is a precision go-no/go instrument designed to quickly and reliably verify threaded holes. Its compact form and intuitive operation make it a essential tool for production lines, maintenance shops, and QA labs where fast, confident inspections are critical.

Configured for UNS thread work, this gauge targets 7/8 x 16 right-hand threads with 2B tolerance, helping teams confirm that holes meet Unified Thread Standards before assembly or service. It’s a dependable choice for manufacturers, automotive technicians, and aerospace inspections seeking consistent, repeatable results.

• Fast Go/No-Go checks: Quickly differentiate between compliant and non-conforming threads, reducing inspection time and eliminating guesswork.
• UNS standard-ready sizing: Precisely matches 7/8 x 16 right-hand threads with 2B tolerance to provide reliable, repeatable measurements across parts.
• Durable, easy-to-handle construction: Rugged metal body with a knurled grip supports repeated use in busy shop environments while delivering steady, repeatable results.

This plug gauge streamlines quality control, helping you speed up inspections, reduce rework, and improve first-time fit in assemblies. Its sturdy build and standard-compliant size give you confidence that measurements are trustworthy day after day, making it a dependable addition to any inspection or maintenance toolkit.