The JBO Thread Plug Gauge is a right-hand, metric fine thread Go/No-Go gauge designed for M30 x 0.75 holes. Built for precision work, it lets you quickly verify threaded holes during assembly or quality checks, ensuring parts thread in smoothly and consistently.

• Go/No-Go quick verification: Immediately determine if a threaded hole meets the target tolerance, speeding up inspections and helping keep production on schedule.
• Hardened steel construction: Delivers durable, wear‑resistant performance for daily use in busy workshops and on the shop floor, maintaining accuracy over time.
• Metric fine precision: M30 x 0.75, 6H: Provides reliable checks for fine-thread components, supporting consistent thread engagement and reducing guesswork during assembly.

Using this gauge helps you catch misfits early, reduce downtime, and ensure dependable thread engagement across assemblies. Its rugged construction and precise Go/No-Go design give you confidence in every measurement, making it a reliable tool for engineers, machinists, and maintenance professionals alike.