The JBO Thread Plug Gauge is a precision Go/No-Go inspection tool designed specifically for metric fine threads. Ideal for engineers, machinists, and quality-control teams, it quickly confirms whether a threaded hole meets the exact specifications for M15 x 1.5 right-hand threads with a 6H tolerance, helping you prevent misfits in assemblies.

Crafted for reliable performance in demanding shop environments, this gauge combines durable hardened-steel construction with a knurled, ergonomic body for easy handling. The Go/No-Go design delivers clear, immediate results, speeding up inspections and reducing guesswork during setup and production checks.

• Go/No-Go quick checks: Quickly verify hole size against the go and no-go limits to confirm fit, cutting inspection time and avoiding unnecessary rework.
• Durable hardened steel construction: Built to resist wear and maintain accuracy over thousands of uses, ensuring consistent measurements and long service life.
• Metric fine-thread precision (M15 x 1.5, right-hand, 6H): Precisely calibrated for common metric fine threads, providing reliable results that align with standard manufacturing tolerances.

Using the JBO Thread Plug Gauge helps streamline your QA workflow, reduces scrap from mismatched threads, and delivers confidence in every measurement. Its robust design and clear Go/No-Go feedback support faster setups, fewer delays, and consistently high-quality results across production runs.