Bay State C36137-01 Plug Hand Tap is a six-flute, plug-style hand tapping tool sized 1-3/8-16 and manufactured from high-speed steel (HS). It is designed for manually cutting internal threads in metal workpieces, a process typically performed with a tap wrench or T-handle. The designation N HS G H4 and the part number C36137-01 identify this exact Bay State tap.
