The JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads, helping ensure tight, repeatable fits in critical assemblies. Built for M30 x 1.5 right-hand threads with 6H tolerance, its Go/No-Go design lets you quickly verify threaded holes, while the hardened steel body delivers durable, long-lasting performance in demanding workshops.

• Go/No-Go quick check: Quickly determine hole acceptance with a simple pass/fail test, speeding setup and reducing rework.
• Metric fine-thread accuracy (M30 x 1.5, right-hand, 6H): Ensures precise engagement and repeatable results for critical assemblies.
• Hardened steel construction: Withstands daily workshop wear to preserve measurement integrity and extend tool life.

Use this gauge in inspection, assembly, and maintenance to confirm perfect thread fit, minimize guesswork, and cut downtime. By delivering reliable, repeatable checks, it helps you speed up setup, reduce scrap, and improve overall quality across production and repairs.