The JBO Ring Gauge (NoGo) for metric fine threads is a precision inspection tool designed to verify external thread diameters on components with M90 x 1.5 right-hand threads. Used in go/no-go checks, it quickly confirms whether a part meets the intended thread size and tolerance, helping you separate compliant parts from non-conforming ones with confidence.

Manufactured with hardened steel, this gauge delivers durability and wear resistance for demanding workshop conditions. Its tight, engineered tolerances maintain reliable performance over time, supporting consistent quality control across production, assembly, and maintenance tasks.

• Accurate go/no-go external thread verification: Quickly determine if a thread is within tolerance and flag non-conforming parts, reducing inspection time and rework.
• Durable hardened steel construction: Built to withstand daily use and resist wear, ensuring long-lasting accuracy in busy environments.
• Right-hand metric fine threading (M90 x 1.5 NoGo): Precisely matches the target thread specification, enabling reliable, repeatable checks for components with these dimensions.

Using this gauge streamlines quality control by delivering fast, reliable assessments of thread integrity. It supports consistent results, reduces downtime from misidentified parts, and helps you maintain standards across manufacturing, machining, and maintenance workflows.