21. Taps for Pipe Threads Description of products Classification of American pipe thread taps Designation Symbol Class Material Threads to be cut Range Straight Pipe Thread Tap 1/ 8 Dryseal Straight Pipe Thread Tap 1/ 8 3/ 4 Taper Pipe Thread Tap 1/ 16 Dryseal Taper Pipe Thread Tap 1/ 16 ■Thread limit of American Pipe Thread Taps Straight pipe thread taps for (NPS) G Class Max: Major Dia. Min: Major Dia. Max: Pitch Dia. Min: Pitch Dia. Max: Minor Dia. Unit : mm Size Major diameter Pitch diameter Minor diameter Max. Min. Tolerance Max. Min. Tolerance Max. : Above dimensions change depending on actually measured. Taper pipe thread taps (NPT) G Class Tc (Max) Tc (Min) Fc (Max) Fc (Min) Number of threads Tr (Max) Tr (Min) Fr (Max) Fr (Min) Technical Information Axis of tap Taper Technical-61 832