Threaded Ring Gauge Long Form Calibration Certificate No Material Tool Steel Dimension Type Metric Gauge Type Go/No-Go (Plus/Minus) Pitch Diameter 1.354 mm (Go) 1.291 mm (No-Go) Pitch Diameter - Go Member 1.354 mm Pitch Diameter - No-Go Member 1.291 mm Thread Class 6G Thread Length 2.4 mm Thread Size M1.6 x 0.35 Thread Type Metric Compatible Holder Size 1T Finish Uncoated Gauge Design Adjustable Hardness RC 60-62