The JBO Thread Plug Gauge is a precision inspection tool designed to verify internal UNC threads in holes. Sized for UNC 1 1/8 x 7 right‑hand threads with a 2B tolerance, it ensures holes meet standard dimensions for reliable fitment in manufacturing, automotive, and aerospace applications.

Its go/no-go design lets you quickly identify conforming and non-conforming threads, speeding up quality checks and reducing rework.

• Go/No-Go Design for Fast Conformity Checks: The dual ends provide immediate pass/fail results for internal UNC threads, enabling rapid decisions and minimizing guesswork on hole quality.
• Precise UNC 1-1/8 x 7 Right-Hand, 2B Tolerances: Machined to exact dimensions to ensure threads match the 2B standard, delivering consistent checks across production runs.
• Two-Ended, User-Friendly Construction: Designed for easy handling and quick switching between Go and No-Go checks, reducing inspection time and tool changes on the shop floor.

The JBO Thread Plug Gauge helps streamline inspection workflows by delivering fast, reliable judgments on threaded holes. By confirming correct hole size and thread engagement at the start of assembly, it reduces rework, prevents costly misfits, and supports consistent, high-quality results across batches. With its durable design and straightforward operation, you can rely on accurate measurements in daily QC routines, maintenance checks, and incoming inspections.