The JBO Thread Ring Gauge (NoGo) is a precision tool for checking external threads to the UNJF Unified thread standard. Sized No. 12 x 28 with Right Hand orientation and 3A class, it’s designed for use in manufacturing, automotive, and aerospace inspection environments where accurate, repeatable measurements matter.

This gauge is crafted from hardened steel for long service life and durability. Its NoGo profile provides an immediate visual and tactile indicator of non-conforming threads, helping inspectors quickly separate good from out-of-spec parts and prevent mismatches in critical assemblies.

• NoGo Design for Clear Pass/Fail Verification: Quickly identify non-conforming threads and reduce inspection time with a design that flags out-of-tolerance parts at a glance, improving throughput on busy production lines.
• UNJF Right Hand 3A Compatibility: Precisely calibrated to Unified thread standards (UNJF) with Right Hand orientation and 3A class, ensuring reliable measurements that align with industry specifications and quality control procedures.
• Durable Hardened Steel Construction with Knurled Edge: Built to withstand daily shop-floor use; the knurled outer edge provides secure handling and easy adjustment, even with gloves, for consistent measurement control.

By adopting the JBO NoGo Ring Gauge in your QC process, you gain faster, more consistent thread verification, reduce rework, and improve overall productivity. The reliable performance of this gauge supports traceable inspections and confidence when delivering threaded components that meet exacting standards.