The JBO Thread Plug Gauge is a precision inspection tool designed for metric coarse threads. It is specifically tailored for right-hand M3.5 x 0.6 threads, helping engineers, machinists, and quality teams verify threaded holes quickly and accurately.

With a go/no-go design, this gauge provides clear, immediate pass/fail results to ensure proper fit and reliable performance of components in assembly, maintenance, and manufacturing workflows.

• Go/No-Go design for fast, reliable checks: Instantly confirm whether a threaded hole accepts the mating screw, reducing guesswork and speeding up inspections.
• Metric coarse thread compatibility: M3.5 x 0.6, right-hand, 6G: Precisely matched to the specified thread form to ensure consistent hole sizing and true-to-spec measurements.
• Hardened steel construction for durability: Built to withstand daily workshop use, delivering long tool life and dependable performance in busy environments.

Using the JBO Thread Plug Gauge helps streamline quality control and assembly, reducing trial fits and rework. Its fast pass/fail results enable you to verify hole readiness in seconds, keep production moving, and ensure reliable screw engagement across your parts and assemblies.