Precision-engineered for professionals, the Asimeto Ring Thread Gauge (NoGo) in metric M20 x 1 delivers a clear, reliable check of thread pitch diameter at the 6g tolerance class. Designed for machinists, quality engineers, and fastener manufacturers, it helps ensure only correctly sized fasteners are used in critical connections.

• Series: 686 Series ring gauge — crafted for consistent, repeatable measurements with a focus on precision and durability.
• Thread type: Metric right-hand thread (M20 x 1) — specifically matched to common industrial fasteners.
• Tolerance class: 6g — tight, standardized tolerance that captures small deviations in pitch diameter.
• NOGO designation: Used to determine if the thread pitch diameter is too large — if a fastener cannot pass through, it exceeds the maximum allowable limit.
• Construction: Precision-machined from high-quality materials for lasting accuracy and dependable performance.
• Grip and handling: Knurled outer edge for secure, tactile handling during measurement in crowded workspaces.
• Application: Ideal for incoming QC, apparel of fastener production, and maintenance checks to prevent mismatched assemblies.

This gauge streamlines quality control by delivering a definitive pass/fail result on maximum thread size, helping you prevent undersized or oversized fasteners from entering critical joints. Use it in incoming inspections, when selecting replacement fasteners, or during product development to validate thread specifications. Built for repeated use in workshop and production environments, the Asimeto 686 Series ring gauge supports accurate, repeatable checks that keep assemblies safe and reliable.