Threaded Plug Gage Dimension Type Metric Gauge Type Go (Plus) No-Go (Minus) Handle Design Assembly Included Handle Taperlock 0 Thread Class 6H Thread Size M4.0 x 0.50 Tolerance Class X Gauge Finish Chrome Plated Gauge Length - Go Member 7.1 mm Gauge Length - No-Go Member 5.6 mm Gauge Material Tool Steel Handle Color Yellow Hardness RC 70/72 Included Certification Certificate of Accuracy Long Form Calibration Certificate Yes Pitch Diameter - Go Member 3.675 mm