JBO Thread Plug Gauge is a precision Go/No-Go tool crafted for metric fine threads. Designed for left-hand threads, it matches M15 x 0.5 with 6H tolerance to quickly verify hole readiness before assembly.

• Left-Hand Thread Compatibility: Specifically designed to gauge left-hand threaded holes, ensuring accurate inspection for LH components and assemblies.
• M15 x 0.5 Metric Fine Thread (6H): Precisely matched to the M15 x 0.5 fine-thread standard with 6H tolerance, enabling reliable size checks and consistent results.
• Go/No-Go Quick-Inspection: The Go/No-Go design provides fast, decisive pass/fail checks, while the hardened steel body delivers long-lasting wear resistance in daily use.

Using the JBO Thread Plug Gauge streamlines threaded-hole verification across projects. The LH design and precise M15 x 0.5 (6H) specification let you confirm hole readiness in seconds, reducing guesswork and minimizing rework. Crafted from hardened steel, it stands up to daily workshop use and delivers repeatable, trustworthy results for quality assemblies.