NPT

Hand Taps for American Taper Pipe Threads

Specification

E

NPT 3/4~

Recommended Tapping Speeds depending on Materials

Medium carbon steels

〜5

For icon explanation, refer to P.50

TYPE:1 TYPE:2

g g

Segment:1G

SizeClassCodeChamferBasic major dia (mm)L (mm)ℓ (mm)ℓg (mm)Ds (mm)K (mm)ℓk (mm)No. of flutesTypeStock
For American PipeThreads
NPT 1/16-27ANSI GTNPT01L3P7.77054171286941
NPT 1/8-27ANSI GTNPT02L3P10.117551912.0586942
NPT 1/4-18ANSI GTNPT04O3P13.426622817.451191242
NPT 3/8-18ANSI GTNPT06O3P16.866652817.6514111442
NPT 1/2-14ANSI GTNPT08Q3P20.980803522.8518141742
NPT 3/4-14ANSI GTNPT12Q3P26.325853522.9523172042
NPT 1 -11.5ANSI GTNPT16T3P32.934954527.426212452
NPT 1 1/4-11.5ANSI GTNPT20T3P41.6891054528.132263052
NPT 1 1/2-11.5ANSI GTNPT24T3P47.7601104528.438293262
NPT 2 -11.5ANSI GTNPT32T3P59.797120502846353862
NPT 2 1/2-8ANSI GTNPT40X3P72.2731456540.855414482
NPT 3 -8ANSI GTNPT48X3P88.1841556542.9565505282