The JBO Thread Plug Gauge is a precision Go/No-Go inspection tool designed for metric fine threads. Specifically engineered for M12 x 1 right-hand threads with 6H tolerance, it helps ensure threaded holes meet exact specifications during manufacturing, assembly, and quality control.

Crafted from hardened steel and finished with a knurled, non-slip body, this gauge delivers durable, long-lasting performance in busy workshops while providing consistent measurements across multiple checks.

• Go/No-Go Quick Verification: Two ends offer immediate pass/fail checks for M12 x 1 right-hand threads, speeding setups and reducing guesswork.
• Rugged Hardened Steel Construction: Built to endure daily use, resisting wear to maintain accuracy and extending tool life in busy environments.
• Ergonomic Dual-End Design: Knurled body and clearly defined go/no-go tips provide secure handling and fast, reliable checks from either orientation.

With the JBO Thread Plug Gauge, you gain confidence that every threaded hole matches exact 6H M12 x 1 specs before assembly. This minimizes rework, prevents misfits in critical assemblies, and cuts inspection time—helping you streamline workflows, improve consistency across batches, and protect your bottom line.