The JBO Thread Ring Gauge (NoGo) is a precision inspection tool for external UNEF threads. Sized for left-hand 11/16-24 (2A) applications, it helps manufacturers, automotive technicians, and aerospace maintenance teams quickly verify thread diameter and identify non-conforming parts. The No-Go design provides an immediate pass/fail indication, keeping inspections fast and reliable.

• Precise UNEF Left-Hand sizing: Specifically calibrated for 11/16-24 left-hand UNEF external threads with Class 2A tolerances, giving you a dependable diameter reference during inspections.
• Fast Go/No-Go validation: The No-Go feature allows quick identification of oversized or out-of-spec threads, reducing inspection time and preventing incorrect assemblies.
• Rugged hardened steel construction: Built to withstand daily shop use, resist wear, and maintain calibration for long-term reliability in busy manufacturing, automotive, and aerospace environments.

Using the gauge helps streamline quality control, improve consistency across parts, and reduce rework. It integrates smoothly into existing inspection workflows, speeds production throughput, and provides confidence that every threaded component meets UNEF 11/16-24 left-hand, 2A specifications before assembly or shipment.