NPT Taper Pipe Thread ANSI B 1.20.1 | ACI Industriearmaturen GmbH

NPT Taper Pipe Thread according ANSI B 1.20.1-1983

Here you finde the dimensions of the self-sealing NPT taper pipe thread according to ANSI B 1.20.1-1983 with a thread angle of 60°.

Nominal size Pitch Major Diameter
[mm]
Tapping Drill
Size [mm]
Threads per inch 
(TPI)
1/16“ – 27 NPT 0,941 7,895 6,00 27
1/8“ – 27 NPT 0,941 10,242 8,25 27
1/4“ – 18 NPT 1,411 13,616 10,70 18
3/8“ – 18 NPT 1,411 17,055 14,10 18
1/2“ – 14 NPT 1,814 21,223 17,40 14
3/4“ – 14 NPT 1,814 26,568 22,60 14
1“ – 11 1/2 NPT 2,209 33,228 28,50 11,5
1 1/4“ – 11 1/2 NPT 2,209 41,985 37,00 11,5
1 1/2“ – 11 1/2 NPT 2,209 48,054 43,50 11,5
2“ – 11 1/2 NPT 2,209 60,092 55,00 11,5
2 1/2“ – 8 NPT 3,175 72,699 65,50 8
3“ – 8 NPT 3,175 88,608 81,50 8
3 1/2“ – 8 NPT 3,175 101,316 94,30 8
4“ – 8 NPT 3,175 113,973 107,00 8
5“ – 8 NPT 3,175 141,300 134,384 8
6“ – 8 NPT 3,175 168,275 161,191 8
8“ – 8 NPT 3,175 219,075 211,673 8
10“ – 8 NPT 3,175 273,050 265,311 8
12“ – 8 NPT 3,175 323,850 315,793 8
Thread Table: NPT Taper Pipe Thread ANSI B 1.20.1-1983 – (104.77 KB)
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