The JBO Thread Plug Gauge (GO) – Metric Fine is a precision inspection tool designed to verify internal threads in tapped holes. This metric-go gauge is sized for M68 x 2 threads and features a right-hand configuration with a 6G tolerance, making it ideal for machinists, quality inspectors, and assembly teams who need quick, reliable hole verification.

Machined from hardened steel, it delivers long-lasting durability and wear resistance in demanding shop environments. Its straightforward, user-friendly design helps you quickly identify holes that meet spec, supporting consistent quality control across manufacturing and maintenance tasks.

• Precise GO verification for M68 x 2 metric threads: Quickly confirms that a hole accepts the GO plug at the target size, enabling fast pass/fail decisions during inspection.
• Durable hardened steel construction: Withstands repeated use, resists wear, and maintains accuracy through heavy-duty inspections in busy workshops.
• Ergonomic, right-hand 6G design: Knurled handle and right-hand orientation provide secure handling and consistent results when checking internal threads in the field or on the shop floor.

Using this GO gauge reduces rework by delivering clear pass/fail indications for M68 x 2 threads, speeds up quality checks, and helps ensure reliable fit in assemblies. The robust construction and simple operation support a smooth workflow, fewer measurement errors, and greater confidence in part quality and tooling.