The JBO Thread Plug Gauge is a precision Go/No-Go instrument designed for metric fine threads, specifically M7 x 0.35 with 6H internal tolerance. With a right-hand configuration, this gauge provides quick, objective checks of threaded holes, helping parts mate correctly on first assembly.

Built for a wide range of users—from machinists and engineers to quality teams and hobbyists—the gauge delivers reliable results in busy shop environments. Its hardened steel construction resists wear, maintaining accuracy through repeated inspections.

• Fast, objective Go/No-Go checks: Quickly verify hole size and thread engagement to confirm whether parts will fit as intended, reducing rework and bottlenecks.
• Durable, wear-resistant construction: Hardened steel stands up to heavy use in production settings, preserving measurement accuracy over time.
• Ergonomic, secure grip: Knurled body provides a stable hold for repeated measurements, improving consistency across operators.

By enabling fast, reliable acceptance testing of threaded holes, the JBO Thread Plug Gauge helps streamline assembly, accelerate QA cycles, and achieve repeatable results across batches. The combination of precise Go/No-Go design and rugged construction gives you confidence in every measurement and reduces the risk of misfits in critical assemblies.