SOLID CARBIDE THREAD MILL – NPT
(NPT-THREAD)

American Standard taper Pipe thread
ANSI B1.20.1,taper 1:16 – (USAS BZ.1)

For internal threads

Specification :
Also offered in helical Flute design & thro’ coolant.

Order no


D


P


d1


L1


L2


d2


z


TPI


803-npt1/16


npt1/16


27


5.9


57


9.8


6


3


803-npt1/8


npt1/8


27


7.67


64


9.88


8


3


803-npt1/4


npt1/4


18


9.9


72


14.82


12


3


803-npt3/8


npt3/8


18


11.15


80


14.82


14


3


803-npt1/2


npt1/2


14


14.25


92


18


16


4


803-npt3/4


npt3/4


14


14.25


92


18


16


4


803-npt1


npt1


11.5


19.6


104


22


20


4


803-npt1/4


npt1/4


11.5


19.6


104


22


20


4


803-npt1/2


npt1/2


11.5


19.6


104


22


20


4


803-npt2


npt2


11.5


19.6


104


22


20


4


803-npt2 1/2


npt2 1/2


8


19.6


104


32


20


4


803-npt3


npt3


8


19.6


104


32


20


4