Threaded Ring Gauge, Long Form Calibration Certificate No, Material Tool Steel, Dimension Type Metric, Gauge Type Go (Plus), Pitch Diameter 4.456 mm, Pitch Diameter - Go Member 4.456 mm, Thread Class 6G, Thread Length 4.8 mm, Thread Size M5 x 0.80, Thread Type Metric, Compatible Holder Size 1T, Finish Uncoated, Gauge Design Adjustable, Hardness RC 60-62, Included Certification Certificate of Accuracy with NIST Traceability, Standards ASME B1.16M, Tolerance Class X