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NPTF American Taper Pipe Thread
ANSI B 1.20.3

Specifications of International Thread Standards

       American Taper Pipe Thread for Dryseal joint without sealant compound.
Nominal Diameter Major Diameter
mm
Tapping
Drill Size
mm
TPI Pitch
mm
1/16" NPTF 7,870 6,00 27 0,940
1/8" NPTF 10,217 8,25 27 0,940
1/4" NPTF 13,577 10,70 18 1,411
3/8" NPTF 17,016 14,10 18 1,411
1/2" NPTF 21,211 17,40 14 1,814
3/4" NPTF 26,566 22,60 14 1,814
1" NPTF 33,195 28,50 11,5 2,209
1 1/4" NPTF 41,952 37,00 11,5 2,209
1 1/2" NPTF 48,021 43,50 11,5 2,209
2" NPTF 60,060 55,00 11,5 2,209
2 1/2" NPTF 72,642 65,50 8 3,175
4" NPTF 113,913 107,00 8 3,175

NPTF Rohrgewinde
 
 

 

© 1998 Conex Metals.

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