INT-NPT

Interrupted Taps for American Taper Pipe Threads

Specification

■ INT-NPT having low left-hand spiral flutes and having every E other thread ground off, reduces cutting torque. INT-NPT is suitable for such sticky materials as stainless steels and Oxide chrome molybdenum steels. NPT 3/4~

Recommended Tapping Speeds depending on Materials

Stainless 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 GTINPT01L3P7.77054171286931
NPT 1/8-27ANSI GTINPT02L3P10.117551912.0586952
NPT 1/4-18ANSI GTINPT04O3P13.426622817.451191252
NPT 3/8-18ANSI GTINPT06O3P16.866652817.6514111452
NPT 1/2-14ANSI GTINPT08Q3P20.980803522.8518141752
NPT 3/4-14ANSI GTINPT12Q3P26.325853522.9523172052
NPT 1 -11.5ANSI GTINPT16T3P32.934954527.426212452
NPT 1 1/4-11.5ANSI GTINPT20T3P41.6891054528.132263052
NPT 1 1/2-11.5ANSI GTINPT24T3P47.7601104528.438293272
NPT 2 -11.5ANSI GTINPT32T3P59.797120502846353872