NPT Rohrgewinde ANSI B 1.20.1
Amerikanisches Rohrgewinde für selbstdichtende Verbindungen (kegelig), mit Dichtmittel
| Gewinde- kennung |
Durchmesser aussen mm |
Durchmesser Kernloch am dünnen Rohrende mm |
Gänge je Inch |
Steigung mm |
| 1/16" NPT | 7,895 | 6,00 | 27 | 0,941 |
| 1/8" NPT | 10,242 | 8,25 | 27 | 0,941 |
| 1/4" NPT | 13,616 | 10,70 | 18 | 1,411 |
| 3/8" NPT | 17,055 | 14,10 | 18 | 1,411 |
| 1/2" NPT | 21,223 | 17,40 | 14 | 1,814 |
| 3/4" NPT | 26,568 | 22,60 | 14 | 1,814 |
| 1" NPT | 33,228 | 28,50 | 11,5 | 2,209 |
| 1 1/4" NPT | 41,985 | 37,00 | 11,5 | 2,209 |
| 1 1/2" NPT | 48,054 | 43,50 | 11,5 | 2,209 |
| 2" NPT | 60,092 | 55,00 | 11,5 | 2,209 |
| 2 1/2" NPT | 72,699 | 65,50 | 8 | 3,175 |
| 3" NPT | 88,608 | 81,50 | 8 | 3,175 |
| 3 1/2" NPT | 101,316 | 94,30 | 8 | 3,175 |
| 4" NPT | 113,973 | 107,00 | 8 | 3,175 |
| 5" NPT | 141,300 | 134,384 | 8 | 3,175 |
| 6" NPT | 168,275 | 161,191 | 8 | 3,175 |
| 8" NPT | 219,075 | 211,673 | 8 | 3,175 |
| 10" NPT | 273,050 | 265,311 | 8 | 3,175 |
| 12" NPT | 323,850 | 315,793 | 8 | 3,175 |
