The JBO Thread Plug Gauge is a precision go/no-go tool for quickly verifying UNJF right-hand internal threads on 1 x 12 sizes. With a 3B tolerance class, this dual-ended gauge delivers reliable pass/fail results, making it ideal for quality-critical work in manufacturing, automotive, and aerospace environments. Its compact, easy-to-handle design lets operators test both go and no-go limits in a single check, saving time and reducing guesswork on every part.

• Dual-Ended Go/No-Go Design: Quickly determine if threads meet tolerance by testing both the go and no-go limits in a single tool, reducing inspection steps and downtime.
• Precision UNJF Right-Hand 1 x 12, 3B Calibration: Specifically calibrated to UNJF right-hand threads, delivering accurate pass/fail results for standard hole sizes in this class and pitch.
• Durable, Hand-Friendly Construction: Knurled grip and robust metal ends provide secure handling and long life in busy workshop environments, ensuring repeatable checks over time.

Using the JBO Thread Plug Gauge helps streamline quality control by providing immediate acceptance or rejection signals, improving workflow, and reducing rework. Its reliable performance supports consistent thread fit across parts and assemblies, making it a trusted addition to inspection routines on production lines, maintenance shops, and field service operations.