The JBO Thread Ring Gauge (NoGo) is a precision tool designed to verify external metric threads. It’s ideal for engineers, inspectors, machinists, buyers, tradespeople, and maintenance professionals who need fast, reliable confirmation that parts meet the M40 x 1 standard. This NoGo ring gauge supports accurate diameter checks and helps ensure components will assemble correctly in downstream processes.

Crafted from hardened steel, this gauge delivers exceptional durability and wear resistance for demanding workshop environments. Its user-friendly design and NoGo feature make it easy to identify non-conforming threaded components at a glance, supporting efficient quality control and precision engineering workflows.

• Durable hardened steel construction: Built to withstand daily use in busy shops, ensuring long-term accuracy and reliability even under wear and tear.
• Fast Go/NoGo verification: Enables quick pass/fail checks of external threads, reducing inspection time and accelerating quality decisions.
• Metric Fine M40 x 1 right-hand sizing: Precisely matched to the M40 x 1 right-hand thread standard, delivering consistent, repeatable measurements for reliable compatibility.

Using the JBO Thread Ring Gauge (NoGo) helps you quickly verify external thread diameters, supporting quality control and precision engineering tasks. Its durable construction and clear NoGo indication promote reliable, repeatable results that can streamline inspections and reduce downtime in production or maintenance activities.