The JBO Thread Plug Gauge is a precision inspection tool designed specifically for metric fine threads. Ideal for machinists, quality inspectors, and assembly technicians, this Go/No-Go gauge lets you verify threaded holes quickly and with confidence. The right-hand orientation and M28 x 0.5 specification (6H tolerance) ensure you’re checking exactly the threads you use in real-world parts.

• Go/No-Go design for fast, reliable verification: Quickly determine if a hole is within tolerance—no guesswork needed—so you can keep production moving and avoid misfits during assembly.
• Hardened steel construction for lasting durability: Built to withstand daily use in busy workshops, delivering consistent accuracy and resisting wear over time.
• Metric fine-thread precision (M28 x 0.5, 6H, Right-Hand): Specifically calibrated for the fine-thread spec you work with, providing dependable checks and repeatable results across multiple jobs.

Used as a core part of quality control, the JBO Thread Plug Gauge helps streamline inspections, reduce downtime, and improve the reliability of threaded assemblies. Its robust build and precise Go/No-Go feedback support faster decision-making, so your team spends less time gatekeeping and more time delivering tight, consistent fits.