Gewindetabellen
Außen-Ø, Steigung/TPI, Kernloch (75 %) und Kerndurchmesser je Norm.
MetrischMetrisch feinUNCUNFUNEFBSW (Whitworth)BSF (Whitworth fein)NPT (kegelig)BSPP / GACMETrapez (DIN 103)STI (Helicoil)
| Gewinde | Ø [Zoll] | TPI | Ø [mm] | Steigung [mm] | Kernloch 75 % [mm] | Kern-Ø [mm] |
|---|---|---|---|---|---|---|
| 1/16-27 NPT | 0.3125″ | 27.0 | 7.938 | 0.9407 | 6.1 | 6.919 |
| 1/8-27 NPT | 0.405″ | 27.0 | 10.287 | 0.9407 | 8.66 | 9.269 |
| 1/4-18 NPT | 0.54″ | 18.0 | 13.716 | 1.4111 | 11.1 | 12.188 |
| 3/8-18 NPT | 0.675″ | 18.0 | 17.145 | 1.4111 | 14.5 | 15.617 |
| 1/2-14 NPT | 0.84″ | 14.0 | 21.336 | 1.8143 | 17.86 | 19.372 |
| 3/4-14 NPT | 1.05″ | 14.0 | 26.67 | 1.8143 | 23.02 | 24.706 |
| 1-11.5 NPT | 1.315″ | 11.5 | 33.401 | 2.2087 | 28.96 | 31.01 |
| 1-1/4-11.5 NPT | 1.66″ | 11.5 | 42.164 | 2.2087 | 37.31 | 39.773 |
| 1-1/2-11.5 NPT | 1.9″ | 11.5 | 48.26 | 2.2087 | 43.66 | 45.869 |
| 2-11.5 NPT | 2.375″ | 11.5 | 60.325 | 2.2087 | 55.96 | 57.934 |
Kernloch für Schneidbohrer bei 75 % Flankenanteil. UN/metrisch: 60°; Whitworth: 55°; NPT: kegelig 1:16 (Bohrungs-Ø aus ANSI B1.20.1); ACME: 29°, Trapez DIN 103: 30° Bewegungsgewinde (Kernloch = Kern-Ø = D − P, Idealmaß). Alle Werte Richtwerte.