The JBO Thread Ring Gauge (GO) is a precision tool for quickly verifying external thread diameters against metric fine standards. It’s ideal for engineers, machinists, inspectors, and quality teams who need reliable go/no-go results to confirm part conformity.

Designed for right-hand threads in the M140 x 4 size with 6g tolerance, this gauge combines rugged durability with accuracy. Manufactured from hardened steel, it stands up to daily use in demanding workshops while delivering consistent results.

• Metric Fine GO Gauge for M140 x 4: Quickly verify external thread diameter and pitch against metric fine standards, delivering a clear go/no-go result to keep production moving.
• Hardened steel construction: Built to resist wear and deformation, giving long service life and dependable performance across many inspections.
• Right-hand threading with 6g tolerance: Specifically calibrated for right-hand threads in the 6g class, ensuring parts meet the intended fit and standard every time.

This gauge helps you streamline inspection workflows, reduce rework, and improve overall thread quality across batches. With its durable construction and straightforward GO indication, you’ll spend less time sizing parts and more time producing reliable, compliant components.