The JBO Thread Ring Gauge (NoGo) is a purpose-built external thread inspection tool that helps shops and quality teams verify metric threads quickly and accurately. This NoGo gauge is engineered for right-hand, metric-fine threads and is sized for M18 x 1.5 with 6e tolerance, making it ideal for precision fasteners and threaded components.

Crafted from hardened steel, the gauge offers excellent wear resistance to withstand daily use in busy workshops. Its robust construction and precise dimensions support reliable inspections, while the NoGo design clearly flags non-conforming parts, helping you maintain consistent quality in assembly and machining workflows.

• Fast Go/No-Go verification: Quickly determine whether a component’s external thread is within the specified M18 x 1.5 size and 6e tolerance, reducing inspection time and preventing misfits.
• Hardened steel durability: Built to endure repetitive insertions and withdrawals in demanding environments, delivering long service life and stable accuracy.
• Metric fine pitch accuracy: Precisely calibrated for metric fine threads, ensuring reliable measurements for precision fasteners and fine-threaded components.

Using this gauge in your quality process helps streamline inspection, minimize rework, and improve overall throughput. By delivering clear pass/fail results on each part, it supports consistent outcomes across operators and shifts, boosting confidence in received, machined, or assembled components and helping you meet tight production deadlines.