The JBO Thread Plug Gauge (NoGo) is a precision tool for metric fine threads. Its compact, cylindrical profile and knurled grip make it easy to handle on the shop floor, while the hardened steel body stands up to daily use in busy workshops.

Designed for M56 x 2 right-hand, 6G threads, this NoGo gauge delivers reliable, quick checks to ensure threaded holes will accept the bolt within specification. A single pass/fail result helps inspectors work faster and reduce guesswork in assembly and manufacturing.

• NoGo verification for metric fine threads: Quickly confirms holes are within tolerance, reducing rework and ensuring reliable assemblies.
• Durable hardened steel construction: Long-lasting durability that resists wear and maintains accuracy through frequent use in demanding environments.
• Precisely matched for M56 x 2, right-hand, 6G threads: Specifically sized and oriented to deliver consistent, repeatable measurements across parts.

By using this gauge, you streamline inspection workflows, minimize downtime due to misfits, and improve overall part quality and compatibility. The robust build and precise sizing give you confidence in every check, whether you’re fabricating components, performing quality control, or preparing parts for final assembly.