
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
Technical-61
832