JBO Thread Plug Gauge is a precision inspection tool designed for metric fine threads. It’s ideal for engineers, machinists, and technicians who need fast, reliable checks to confirm threaded holes will mate correctly with the corresponding fasteners. This left-hand Go/No-Go gauge validates hole size and thread fit at a glance, helping maintain tight tolerances in production, assembly, and maintenance workflows.

• Go/No-Go quick checks: Enables rapid verification of both the minimum and maximum thread engagement, speeding up quality control and reducing guesswork during assembly.
• Hardened steel durability: Built to withstand everyday shop use, offering long wear resistance and stable measurements over thousands of cycles.
• Left-hand metric fine thread compatibility (M28 x 1.5, 6H): Precisely sized for left-handed, fine-pitch threads, ensuring accurate checks and consistent results for critical fits.

With the JBO Thread Plug Gauge, you gain dependable, field-proven results that streamline inspections, reduce downtime, and improve first-pass assembly accuracy. It’s a reliable companion for quality teams and technicians who demand consistent performance in demanding environments.