Vermont Gage 5/16-24 UNF-3A LO Thread Ring Gage

The Vermont Gage 5/16-24 UNF-3A LO Thread Ring Gage is a precision No-Go gauge for external 5/16-24 UNF Class 3A threads, designed to verify dimensional accuracy and pitch diameter while ensuring components do not exceed maximum material limits. The LO (No-Go) ring gage provides a straightforward pass/fail check for production at the inspection bench, and is suitable for use in machine shops, calibration laboratories, aerospace, automotive, and other industrial quality-control environments where tight external thread tolerances are required. Technical specifications include Thread Size 5/16"-24 UNF, Thread Form UNF, Thread Class 3A, No-Go Pitch Diameter 0.2827 in., and a Hardened Tool Steel construction. It is manufactured to ASME B1.2 standards and ships with a Certificate of Accuracy for new units. This gage is intended specifically for external thread inspection of 5/16"-24 UNF Class 3A components, helping quality professionals perform accurate pass/fail checks during production and final inspection.