The JBO Thread Plug Gauge is a right-hand, go/no-go gauge designed to verify internal metric coarse threads, specifically M8 x 1.25, with a 6H tolerance. It delivers quick, reliable checks to ensure threaded holes accept fasteners as intended and assemblies fit properly. Built for everyday use in workshops, production lines, and quality control labs, this gauge helps teams confirm thread integrity with confidence.

Made from hardened steel, this gauge withstands rigorous use and maintains its accuracy over many inspections. The design emphasizes durability and consistency, so you get reliable performance project after project.

• Go/No-Go design for fast, confident checks: quickly verify acceptable thread engagement; the go end confirms proper hole acceptance, while the no-go end flags out-of-tolerance holes to prevent misfits.
• Hardened steel construction for long-lasting precision: durable, wear-resistant body maintains dimensional integrity even after thousands of insertions.
• Ergonomic, knurled body for secure handling: textured grip and balanced form enable easy alignment and comfortable use in busy environments.

Using the JBO Thread Plug Gauge streamlines quality control, reduces inspection time, and minimizes rework by delivering clear, repeatable results for M8 x 1.25 internal threads. Its robust build and precise go/no-go operation provide reliable guidance on hole readiness, helping teams maintain consistent performance across workflows.