The JBO Thread Plug Gauge is a precision tool designed for verifying metric fine internal threads. It targets M26 x 2 holes with a right-hand thread and 4H tolerance, helping ensure your components will thread together smoothly during assembly or maintenance. Ideal for engineers, machinists, inspectors, and workshop technicians, it provides a quick, reliable check before production moves forward.

• Go/No-Go design: Allows fast pass/fail verification of internal threads, dramatically reducing inspection time and training needed while improving consistency across parts.
• Hardened steel construction: Delivers exceptional wear resistance and long service life in busy shop environments, maintaining accuracy over many cycles.
• Metric fine-thread compatibility (M26 x 2, 4H, Right Hand): Ensures reliable checks for common fine-thread holes, delivering repeatable results that support tight tolerances and quality control.

Used at setup and in ongoing QC, this gauge helps you cut downtime, prevent misfits, and promote consistent thread quality across batches. It streamlines threading verification, supports accurate part mating, and provides confidence that your assemblies will thread correctly from the first attempt.