Cuts internal threads in pipes; Nominal size of the tap is that of the pipe fitting being tapped; Available in National Pipe Taper (NPT); Ideal for pipe fittings; Specifications: Cuts intragroup threads in pipes; 3/4" - 14 NPT; Nominal sizing of the tap is the sizing of the pipe meet existence abroach; Thread Standard = NPT; No. of Flutes = 4; Outside Cutting Direction = Right; Style = Taper; Applicable Materials = Most Metals; Material = High Carbon Steel