The JBO Thread Plug Gauge is a precision left-hand, metric fine-thread Go/No-Go gauge designed to verify M25 x 1 threaded holes to a 6H tolerance. It’s built for applications where exact threading matters, making it ideal for machining, assembly, and quality-control work where a fast, reliable check is essential.

Crafted with hardened steel for lasting performance, this gauge delivers quick, decisive checks so you can confirm hole readiness without elaborate measurements. The Go/No-Go design speeds setup and reduces inspection time in busy workshops, helping you keep production moving smoothly.

• Left-Hand Metric Fine Thread Compatibility: Designed for left-hand M25 x 1 threads, enabling quick checks of hole compatibility and reducing guesswork during assembly.
• Go/No-Go Quick Validation: Fast pass/fail assessment for hole tolerance, speeding measurements and cutting down rework or delays.
• Hardened Steel Durability: Rugged construction resists wear and deformation, ensuring accurate checks over many uses in demanding environments.

This gauge helps you streamline quality control by providing fast, reliable verification of thread holes, supporting precise assemblies and smoother workflows. With its sturdy build and straightforward pass/fail action, you can trust it to deliver consistent results across daily tasks—from setup and verification to final assembly—while reducing downtime and rework.