Pipe Threaded Plug Gauge Dimension Type Inch Gauge Type No-Go (Minus) Handle Design Member Only Thread Size 1/8 In.-27 Thread Type NPSF Tolerance Class X Gauge Finish Uncoated Gauge Material Tool Steel Handle Length None Hardness RC 60-62 Included Certification Certificate of Accuracy with NIST Traceability Pitch Diameter - No-Go Member 0.3727 in Thread Direction Right Hand