The JBO Thread Ring Gauge (NoGo) is a precision inspection tool used to verify external thread diameters on metric coarse threads. It’s ideal for quality control professionals, machinists, engineers, and workshop technicians who need fast, repeatable checks to ensure parts meet specifications and will fit properly in assemblies.

Designed for right-hand metric coarse threads in size M12 x 1.75 and tolerance class 6e, the NoGo gauge delivers dependable go/no-go results. The body is manufactured from hardened steel for durability and wear resistance in busy shops.

• NoGo quick-check for out-of-spec threads: Effortless pass/fail reading helps you identify oversized or out-of-spec threads at a glance, reducing inspection time and preventing defective parts from advancing.
• Durable hardened steel construction: Built to withstand daily use in demanding environments while preserving measurement accuracy and extending tool life.
• Right-hand metric coarse thread compatibility (M12 x 1.75, 6e): Matches common industry standards for reliable, quick checks with minimal setup in quality control workflows.

Using the JBO Thread Ring Gauge (NoGo) in your inspection process helps streamline quality control, reduces rework, and ensures consistent results across batches. It provides confidence that metric coarse threaded connections will assemble correctly and perform as intended, making it a dependable addition to any precision engineering, manufacturing, or maintenance routine.