The JBO Thread Plug Gauge is a right-hand metric fine-thread Go/No-Go gauge designed for precise hole inspection. Built for M3 x 0.35 threads, it helps machinists, inspectors, and assembly teams verify hole readiness quickly and confidently, thanks to its hardened steel construction and knurled grip.

• Go/No-Go design for rapid checks: Easily determine if a hole accepts the M3 x 0.35 thread or requires rework, speeding up quality control and assembly.
• Rugged hardened steel construction: Built to withstand daily shop use, delivering long-lasting accuracy and reducing replacement costs.
• Right-hand metric fine-thread compatibility (M3 x 0.35, 4H): Specifically tuned for metric fine threads with 4H tolerance, providing repeatable, reliable go/no-go results across parts.

With the JBO Thread Plug Gauge, you gain a dependable tool that speeds setup and inspection, helps prevent mismatches in assemblies, and supports consistent results across production runs. The combination of a precise Go/No-Go action and durable hardened steel construction ensures accurate checks under busy shop conditions, so you can minimize downtime and deliver quality parts with confidence.