The JBO NoGo Ring Gauge for Metric Coarse threads is a compact, reliable tool for checking external thread diameters. Designed for left-hand coarse threads (M1.6 x 0.35, 6g), it helps engineers, machinists, and quality professionals quickly verify parts meet exact standards. Built from hardened steel and finished with a knurled outer edge for secure handling, this gauge also features a small red alignment mark to speed orientation during inspections.

• Hardened steel durability: Highly wear-resistant construction stands up to daily use on busy shop floors, delivering long service life and repeatable measurements.
• Precise metric coarse sizing (Left-Hand, M1.6 x 0.35, 6g): Engineered to the exact dimension to reliably verify external thread quality and compatibility with standard metric coarse fasteners.
• Quick, intuitive NoGo checks: Clear, user-friendly design focuses on fast pass/fail decisions, helping you spot non-conforming parts at a glance and keep production moving.

By using this gauge, you reduce inspection time, minimize downtime, and improve overall part quality. It supports consistent, repeatable results across batches, helps prevent mismatched assemblies, and provides clear documentation of conformance for traceability in QA processes.