Threaded Plug Gauge, 5/16 in-20, UN

Thread Plug Gauges, Dimension Type Inch, Gauge Type Go/No-Go (Plus/Minus), Handle Design Assembly, Included Handle Taperlock 3B, Thread Class 3B, Thread Size 5/16 in-20, Thread Type UN, Tolerance Class X, Gauge Finish Chrome Plated, Gauge Length – Go Member 1/2 in, Gauge Length – No-Go Member 5/16 in, Handle Color Light Blue, Hardness RC 70/72, Included Certification Certificate of Accuracy, Long Form Calibration Certificate No, Pitch Diameter – Go Member 0.28 in