Threaded Ring Gauge Long Form Calibration Certificate No Material Tool Steel Dimension Type Inch Gauge Type Go/No-Go (Plus/Minus) Pitch Diameter 0.1428 (Go) 0.1399 (No-Go) Pitch Diameter - Go Member 0.1428 in Pitch Diameter - No-Go Member 0.1399 in Thread Class 2A Thread Length 3/16 in Thread Size #8-32 Thread Type UNC Compatible Holder Size 1T Finish Uncoated Gauge Design Adjustable Hardness RC 60-62 Included Certification Certificate of Accuracy with NIST Traceability