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 /8
1


Dryseal Straight Pipe Thread Tap /8
1 /4
3


Taper Pipe Thread Tap / 16
1


Dryseal Taper Pipe Thread Tap / 16
1


■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.


Minor Dia.
Max:


Unit : mm
Major diameter Pitch diameter Minor diameter
Size
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


Fr (Max)
Tr (Max)
Tr (Min)


Fr (Min)
Information
Technical


Axis of tap
Taper


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