The JBO Thread Plug Gauge (GO) is a precision inspection tool designed to quickly and reliably verify internal metric threads. Specifically crafted for metric fine pitches, it helps machinists, quality inspectors, and assembly professionals confirm that threaded holes meet the required size and tolerance without guesswork.

Made from hardened steel for exceptional wear resistance, this GO gauge is built to endure busy workshop environments and repeated use. Its Right Hand thread with M85 x 2 size and 6H tolerance provides consistent, repeatable checks, helping you maintain dimensional accuracy and reduce downtime in quality control processes.

• Precise metric fine GO gauge for M85 x 2 (6H): Enables quick, reliable verification that threaded holes accept the standard Go size, supporting accurate inspection and conformity to specifications.
• Hardened steel for durability: Designed to withstand frequent insertions and challenging work conditions, delivering long service life and stable performance over time.
• Ergonomic, easy-to-use design: Knurled body and clear go-friendly feature make inspections smooth and fast, helping reduce cycle time and operator fatigue.

Using this gauge streamlines quality checks, reduces scrap, and improves overall workflow by delivering consistent hole sizing verification. It supports confident decisions in sourcing, assembly, and downstream manufacturing steps, ensuring reliable results across projects and teams.