The JBO Thread Plug Gauge (GO) is a precision inspection tool designed to verify internal threads in metal parts. It's built for engineers, machinists, inspectors, and workshop operators who value quick, reliable go/no-go checks to ensure holes meet exact metric fine-thread standards.

Designed for metric fine applications, this GO gauge targets M62 x 4 with a 6H tolerance, delivering clear, repeatable pass/fail checks during quality control. Crafted from hardened steel, the gauge resists wear and maintains accurate dimensions through heavy use in demanding shop environments.

• Exact metric GO fit (M62 x 4): Delivers fast, unambiguous hole verification so parts assemble correctly the first time and inspection cycles stay efficient.
• Hardened steel construction for lasting accuracy: Stands up to daily use, resisting wear and maintaining precise dimensions for long service life.
• Ergonomic, user-friendly design: Right-hand orientation with a knurled surface provides a secure grip and quick, repeatable checks, reducing inspection time.

In daily workloads, the JBO Thread Plug Gauge (GO) helps you confirm thread conformity with confidence, speed up quality checks, and protect downstream assembly from misfits. Its robust build and precise sizing translate to dependable performance across production runs, supporting consistent results and streamlined workflows.