The JBO Thread Plug Gauge is a precision tool designed for metric fine threads, featuring a left-hand orientation and 6H tolerance for accurate internal-thread gauging. Sized for M25 x 2 holes, it enables fast go/no-go checks to confirm hole acceptance or rejection, helping machinists, inspectors, and maintenance teams verify thread quality with confidence.

• Go/No-Go Quick Checks: Instantly determine if a threaded hole meets spec by testing the go end (fits) and the no-go end (doesn't fit); this speeds setup and reduces guesswork during assembly.
• Metric Fine Thread Compatibility (M25 x 2): Precisely matched to metric fine-thread holes, including M25 x 2, delivering repeatable results across parts and batches.
• Durable Hardened Steel Construction: Built to withstand daily workshop use, resisting wear and maintaining accuracy through thousands of insertions.

Using this gauge helps tighten quality control, shorten inspection cycles, and ensure consistent thread engagement across assemblies. The go/no-go method minimizes rework and delays, while the rugged construction supports long service life in busy workshops.