{"id":5757,"date":"2025-12-24T05:18:00","date_gmt":"2025-12-24T05:18:00","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5757"},"modified":"2025-12-24T05:18:19","modified_gmt":"2025-12-24T05:18:19","slug":"gb-t-9145-2003-thread-limit-dimensions","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/de\/blog\/gb-t-9145-2003-thread-limit-dimensions\/","title":{"rendered":"GB\/T 9145-2003 Gewindegrenzabmessungen"},"content":{"rendered":"

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Einf\u00fchrung in den Standard GB\/T 9145-2003<\/h2>\n

Diese Norm legt die Grenzabmessungen f\u00fcr metrische Standardgewinde mittlerer Genauigkeit in der bevorzugten Gewindereihe fest und gew\u00e4hrleistet so die Austauschbarkeit und Leistungsf\u00e4higkeit in mechanischen Baugruppen. Sie umfasst Grob- und Feingewinde f\u00fcr Innen- und Au\u00dfenanwendungen, wobei die Toleranzen vor der Beschichtung d\u00fcnner Schichten festgelegt werden.<\/p>\n<\/div>\n

\n

Umfang<\/h2>\n

GB\/T 9145-2003 definiert die Grenzma\u00dfe f\u00fcr metrische Schraubengewinde mit mittlerer Toleranzgenauigkeit und bevorzugten Gewindereihen f\u00fcr allgemeine technische Anwendungen. Die Norm stellt sicher, dass Gewindeprofile die durch Grundprofile und Toleranzpositionen definierten maximalen Materialeigenschaften nicht \u00fcberschreiten. Dies ist entscheidend f\u00fcr Verbindungselemente in Branchen, die eine zuverl\u00e4ssige und st\u00f6rungsfreie Verbindung erfordern, insbesondere nach der Galvanisierung.<\/p>\n

    \n
  • Gilt f\u00fcr Gewinde vor dem Aufbringen d\u00fcnner Beschichtungen wie der Galvanisierung.<\/li>\n
  • Nach der Beschichtung m\u00fcssen die Profile innerhalb der H- oder h-Positionen bleiben.<\/li>\n
  • Der Fokus liegt auf mittleren Eingriffsl\u00e4ngen f\u00fcr ein ausgewogenes Verh\u00e4ltnis von Festigkeit und Herstellbarkeit.<\/li>\n<\/ul>\n<\/div>\n
    \n

    Allgemeine Grenzabmessungen<\/h2>\n

    Kein Punkt des Gewindegrundprofils darf das maximal zul\u00e4ssige Profil gem\u00e4\u00df Grundform und Toleranz \u00fcberschreiten. Bei beschichteten Gewinden d\u00fcrfen die tats\u00e4chlichen Konturen nach der Beschichtung die Positionen H\/h nicht \u00fcberschreiten. Dies verhindert ein \u00dcberdrehen oder Versagen in der Montage. Hinweis: Die Toleranzen gelten f\u00fcr d\u00fcnne Beschichtungen; dickere Beschichtungen erfordern Anpassungen.<\/p>\n<\/div>\n

    \n

    Grobgewinde<\/h2>\n

    Bei mittlerer Pr\u00e4zision ist die Eingriffsl\u00e4nge mittel. Toleranzbereiche: 5H f\u00fcr d \u2264 1,4 mm; 6H f\u00fcr d > 1,4 mm. Grenzwerte f\u00fcr den Teilkreisdurchmesser D.2<\/sub> und kleiner Durchmesser D1<\/sub> Sicherstellen, dass das Au\u00dfengewinde korrekt sitzt.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Faden<\/th>\nVerlobungsdauer<\/th>\nTeilkreisdurchmesser D2<\/sub><\/th>\nKleiner Durchmesser D1<\/sub><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\nmax<\/th>\nmin<\/th>\nmax<\/th>\nmin<\/th>\n<\/tr>\n<\/thead>\n
    M1<\/td>\n0.6<\/td>\n1.7<\/td>\n0.894<\/td>\n0.838<\/td>\n0.785<\/td>\n0.729<\/td>\n<\/tr>\n
    M1.2<\/td>\n0.6<\/td>\n1.7<\/td>\n1.094<\/td>\n1.038<\/td>\n0.985<\/td>\n0.929<\/td>\n<\/tr>\n
    M1.4<\/td>\n0.7<\/td>\n2<\/td>\n1.265<\/td>\n1.205<\/td>\n1.142<\/td>\n1.075<\/td>\n<\/tr>\n
    M1.6<\/td>\n0.8<\/td>\n2.6<\/td>\n1.458<\/td>\n1.373<\/td>\n1.321<\/td>\n1.221<\/td>\n<\/tr>\n
    M1.8<\/td>\n0.8<\/td>\n2.6<\/td>\n1.658<\/td>\n1.573<\/td>\n1.521<\/td>\n1.421<\/td>\n<\/tr>\n
    M2<\/td>\n1<\/td>\n3<\/td>\n1.83<\/td>\n1.74<\/td>\n1.679<\/td>\n1.567<\/td>\n<\/tr>\n
    M2.5<\/td>\n1.3<\/td>\n3.8<\/td>\n2.303<\/td>\n2.208<\/td>\n2.138<\/td>\n2.013<\/td>\n<\/tr>\n
    M3<\/td>\n1.5<\/td>\n4.5<\/td>\n2.775<\/td>\n2.675<\/td>\n2.599<\/td>\n2.459<\/td>\n<\/tr>\n
    M3.5<\/td>\n1.7<\/td>\n5<\/td>\n3.222<\/td>\n3.11<\/td>\n3.01<\/td>\n2.85<\/td>\n<\/tr>\n
    M4<\/td>\n2<\/td>\n6<\/td>\n3.663<\/td>\n3.545<\/td>\n3.422<\/td>\n3.242<\/td>\n<\/tr>\n
    M5<\/td>\n2.5<\/td>\n7.5<\/td>\n4.605<\/td>\n4.48<\/td>\n4.334<\/td>\n4.134<\/td>\n<\/tr>\n
    M6<\/td>\n3<\/td>\n9<\/td>\n5.5<\/td>\n5.35<\/td>\n5.153<\/td>\n4.917<\/td>\n<\/tr>\n
    M7<\/td>\n3<\/td>\n9<\/td>\n6.5<\/td>\n6.35<\/td>\n6.153<\/td>\n5.917<\/td>\n<\/tr>\n
    M8<\/td>\n4<\/td>\n12<\/td>\n7.348<\/td>\n7.188<\/td>\n6.912<\/td>\n6.647<\/td>\n<\/tr>\n
    M10<\/td>\n5<\/td>\n15<\/td>\n9.206<\/td>\n9.026<\/td>\n8.676<\/td>\n8.376<\/td>\n<\/tr>\n
    M12<\/td>\n6<\/td>\n18<\/td>\n11.063<\/td>\n10.863<\/td>\n10.441<\/td>\n10.106<\/td>\n<\/tr>\n
    M14<\/td>\n8<\/td>\n24<\/td>\n12.913<\/td>\n12.701<\/td>\n12.21<\/td>\n11.835<\/td>\n<\/tr>\n
    M16<\/td>\n8<\/td>\n24<\/td>\n14.913<\/td>\n14.701<\/td>\n14.21<\/td>\n13.835<\/td>\n<\/tr>\n
    M18<\/td>\n10<\/td>\n30<\/td>\n16.6<\/td>\n16.376<\/td>\n15.744<\/td>\n15.294<\/td>\n<\/tr>\n
    M20<\/td>\n10<\/td>\n30<\/td>\n18.6<\/td>\n18.376<\/td>\n17.744<\/td>\n17.294<\/td>\n<\/tr>\n
    M22<\/td>\n10<\/td>\n30<\/td>\n20.6<\/td>\n20.376<\/td>\n19.744<\/td>\n19.294<\/td>\n<\/tr>\n
    M24<\/td>\n12<\/td>\n36<\/td>\n22.316<\/td>\n22.051<\/td>\n21.252<\/td>\n20.752<\/td>\n<\/tr>\n
    M27<\/td>\n12<\/td>\n36<\/td>\n25.316<\/td>\n25.051<\/td>\n24.252<\/td>\n23.752<\/td>\n<\/tr>\n
    M30<\/td>\n15<\/td>\n45<\/td>\n28.007<\/td>\n27.727<\/td>\n26.771<\/td>\n26.211<\/td>\n<\/tr>\n
    M33<\/td>\n15<\/td>\n45<\/td>\n31.007<\/td>\n30.727<\/td>\n29.771<\/td>\n29.211<\/td>\n<\/tr>\n
    M36<\/td>\n18<\/td>\n53<\/td>\n33.702<\/td>\n33.402<\/td>\n32.27<\/td>\n31.67<\/td>\n<\/tr>\n
    M39<\/td>\n18<\/td>\n53<\/td>\n36.702<\/td>\n36.402<\/td>\n35.27<\/td>\n34.67<\/td>\n<\/tr>\n
    M42<\/td>\n21<\/td>\n63<\/td>\n39.392<\/td>\n39.077<\/td>\n37.799<\/td>\n37.129<\/td>\n<\/tr>\n
    M45<\/td>\n21<\/td>\n63<\/td>\n42.392<\/td>\n42.077<\/td>\n40.799<\/td>\n40.129<\/td>\n<\/tr>\n
    M48<\/td>\n24<\/td>\n71<\/td>\n45.087<\/td>\n44.752<\/td>\n43.297<\/td>\n42.587<\/td>\n<\/tr>\n
    M52<\/td>\n24<\/td>\n71<\/td>\n49.087<\/td>\n48.752<\/td>\n46.681<\/td>\n45.971<\/td>\n<\/tr>\n
    M56<\/td>\n28<\/td>\n85<\/td>\n52.783<\/td>\n52.428<\/td>\n50.796<\/td>\n50.046<\/td>\n<\/tr>\n
    M60<\/td>\n28<\/td>\n85<\/td>\n56.783<\/td>\n56.428<\/td>\n54.796<\/td>\n54.046<\/td>\n<\/tr>\n
    M64<\/td>\n32<\/td>\n95<\/td>\n60.478<\/td>\n60.103<\/td>\n58.305<\/td>\n57.505<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Diese Abmessungen dienen als Richtlinie f\u00fcr die Mutternherstellung und gew\u00e4hrleisten die Kompatibilit\u00e4t mit Schrauben unter mittleren Belastungsbedingungen.<\/p>\n<\/div>\n

    \n

    Grobgewinde<\/h2>\n

    Mittlere Pr\u00e4zision, mittlerer Eingriff. Toleranzbereiche: 6h f\u00fcr d \u2264 1,4 mm; 6g f\u00fcr d > 1,4 mm. Grenzwerte f\u00fcr Au\u00dfendurchmesser d und Teilkreisdurchmesser d.2<\/sub>, mit minimalem Wurzelradius gem\u00e4\u00df GB\/T 197-2003.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Faden<\/th>\nVerlobungsdauer<\/th>\nHauptdurchmesser d<\/th>\nTeilkreisdurchmesser d2<\/sub><\/th>\nMinimaler WurzelradiusA<\/sup><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\nmax<\/th>\nmin<\/th>\nmax<\/th>\nmin<\/th>\nmin<\/th>\n<\/tr>\n<\/thead>\n
    M1<\/td>\n0.6<\/td>\n1.7<\/td>\n1<\/td>\n0.933<\/td>\n0.838<\/td>\n0.785<\/td>\n0.031<\/td>\n<\/tr>\n
    M1.2<\/td>\n0.6<\/td>\n1.7<\/td>\n1.2<\/td>\n1.133<\/td>\n1.038<\/td>\n0.985<\/td>\n0.031<\/td>\n<\/tr>\n
    M1.4<\/td>\n0.7<\/td>\n2<\/td>\n1.4<\/td>\n1.325<\/td>\n1.205<\/td>\n1.149<\/td>\n0.038<\/td>\n<\/tr>\n
    M1.6<\/td>\n0.8<\/td>\n2.6<\/td>\n1.581<\/td>\n1.496<\/td>\n1.354<\/td>\n1.291<\/td>\n0.044<\/td>\n<\/tr>\n
    M1.8<\/td>\n0.8<\/td>\n2.6<\/td>\n1.781<\/td>\n1.696<\/td>\n1.554<\/td>\n1.491<\/td>\n0.044<\/td>\n<\/tr>\n
    M2<\/td>\n1<\/td>\n3<\/td>\n1.981<\/td>\n1.886<\/td>\n1.721<\/td>\n1.654<\/td>\n0.05<\/td>\n<\/tr>\n
    M2.5<\/td>\n1.3<\/td>\n3.8<\/td>\n2.48<\/td>\n2.38<\/td>\n2.188<\/td>\n2.117<\/td>\n0.056<\/td>\n<\/tr>\n
    M3<\/td>\n1.5<\/td>\n4.5<\/td>\n2.98<\/td>\n2.874<\/td>\n2.655<\/td>\n2.58<\/td>\n0.063<\/td>\n<\/tr>\n
    M3.5<\/td>\n1.7<\/td>\n5<\/td>\n3.479<\/td>\n3.354<\/td>\n3.089<\/td>\n3.004<\/td>\n0.075<\/td>\n<\/tr>\n
    M4<\/td>\n2<\/td>\n6<\/td>\n3.978<\/td>\n3.838<\/td>\n3.523<\/td>\n3.433<\/td>\n0.088<\/td>\n<\/tr>\n
    M5<\/td>\n2.5<\/td>\n7.5<\/td>\n4.976<\/td>\n4.826<\/td>\n4.456<\/td>\n4.361<\/td>\n0.1<\/td>\n<\/tr>\n
    M6<\/td>\n3<\/td>\n9<\/td>\n5.974<\/td>\n5.794<\/td>\n5.324<\/td>\n5.212<\/td>\n0.125<\/td>\n<\/tr>\n
    M7<\/td>\n3<\/td>\n9<\/td>\n6.974<\/td>\n6.794<\/td>\n6.324<\/td>\n6.212<\/td>\n0.125<\/td>\n<\/tr>\n
    M8<\/td>\n4<\/td>\n12<\/td>\n7.972<\/td>\n7.76<\/td>\n7.16<\/td>\n7.042<\/td>\n0.156<\/td>\n<\/tr>\n
    M10<\/td>\n5<\/td>\n15<\/td>\n9.968<\/td>\n9.732<\/td>\n8.994<\/td>\n8.862<\/td>\n0.188<\/td>\n<\/tr>\n
    M12<\/td>\n6<\/td>\n18<\/td>\n11.966<\/td>\n11.701<\/td>\n10.829<\/td>\n10.679<\/td>\n0.219<\/td>\n<\/tr>\n
    M14<\/td>\n8<\/td>\n24<\/td>\n13.962<\/td>\n13.682<\/td>\n12.663<\/td>\n12.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M16<\/td>\n8<\/td>\n24<\/td>\n15.962<\/td>\n15.682<\/td>\n14.663<\/td>\n14.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M18<\/td>\n10<\/td>\n30<\/td>\n17.958<\/td>\n17.623<\/td>\n16.334<\/td>\n16.164<\/td>\n0.313<\/td>\n<\/tr>\n
    M20<\/td>\n10<\/td>\n30<\/td>\n19.958<\/td>\n19.623<\/td>\n18.334<\/td>\n18.164<\/td>\n0.313<\/td>\n<\/tr>\n
    M22<\/td>\n10<\/td>\n30<\/td>\n21.958<\/td>\n21.623<\/td>\n20.334<\/td>\n20.164<\/td>\n0.313<\/td>\n<\/tr>\n
    M24<\/td>\n12<\/td>\n36<\/td>\n23.952<\/td>\n23.577<\/td>\n22.003<\/td>\n21.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M27<\/td>\n12<\/td>\n36<\/td>\n26.952<\/td>\n26.577<\/td>\n25.003<\/td>\n24.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M30<\/td>\n15<\/td>\n45<\/td>\n29.947<\/td>\n29.522<\/td>\n27.674<\/td>\n27.462<\/td>\n0.438<\/td>\n<\/tr>\n
    M33<\/td>\n15<\/td>\n45<\/td>\n32.947<\/td>\n32.522<\/td>\n30.674<\/td>\n30.462<\/td>\n0.438<\/td>\n<\/tr>\n
    M36<\/td>\n18<\/td>\n53<\/td>\n35.94<\/td>\n35.465<\/td>\n33.342<\/td>\n33.118<\/td>\n0.5<\/td>\n<\/tr>\n
    M39<\/td>\n18<\/td>\n53<\/td>\n38.94<\/td>\n38.465<\/td>\n36.342<\/td>\n36.118<\/td>\n0.5<\/td>\n<\/tr>\n
    M42<\/td>\n21<\/td>\n63<\/td>\n41.937<\/td>\n41.437<\/td>\n39.014<\/td>\n38.778<\/td>\n0.563<\/td>\n<\/tr>\n
    M45<\/td>\n21<\/td>\n63<\/td>\n44.937<\/td>\n44.437<\/td>\n42.014<\/td>\n41.778<\/td>\n0.563<\/td>\n<\/tr>\n
    M48<\/td>\n24<\/td>\n71<\/td>\n47.929<\/td>\n47.399<\/td>\n44.681<\/td>\n44.431<\/td>\n0.625<\/td>\n<\/tr>\n
    M52<\/td>\n24<\/td>\n71<\/td>\n51.929<\/td>\n51.399<\/td>\n48.681<\/td>\n48.431<\/td>\n0.625<\/td>\n<\/tr>\n
    M56<\/td>\n28<\/td>\n85<\/td>\n55.925<\/td>\n55.365<\/td>\n52.353<\/td>\n52.088<\/td>\n0.688<\/td>\n<\/tr>\n
    M60<\/td>\n28<\/td>\n85<\/td>\n59.925<\/td>\n59.365<\/td>\n56.353<\/td>\n56.088<\/td>\n0.688<\/td>\n<\/tr>\n
    M64<\/td>\n32<\/td>\n95<\/td>\n63.92<\/td>\n63.32<\/td>\n60.023<\/td>\n59.743<\/td>\n0.75<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    A<\/sup> Einzelheiten zum Wurzelradius finden Sie in GB\/T 197-2003, Kapitel 7 und Tabelle 9. Diese gew\u00e4hrleisten eine gleichm\u00e4\u00dfige Spannungsverteilung und Dauerfestigkeit.<\/p>\n<\/div>\n

    \n

    Feingewinde<\/h2>\n

    Mittlere Pr\u00e4zision, mittlerer Eingriff, Toleranzbereich 6H. Feine Teilungen bieten bessere Vibrationsfestigkeit und Einstellgenauigkeit.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Faden<\/th>\nVerlobungsdauer<\/th>\nTeilkreisdurchmesser D2<\/sub><\/th>\nKleiner Durchmesser D1<\/sub><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\nmax<\/th>\nmin<\/th>\nmax<\/th>\nmin<\/th>\n<\/tr>\n<\/thead>\n
    M8\u00d71<\/td>\n3<\/td>\n9<\/td>\n7.5<\/td>\n7.35<\/td>\n7.153<\/td>\n6.917<\/td>\n<\/tr>\n
    M10\u00d71<\/td>\n4<\/td>\n12<\/td>\n9.5<\/td>\n9.35<\/td>\n9.153<\/td>\n8.917<\/td>\n<\/tr>\n
    M10\u00d71,25<\/td>\n4<\/td>\n12<\/td>\n9.348<\/td>\n9.188<\/td>\n8.912<\/td>\n8.647<\/td>\n<\/tr>\n
    M12\u00d71,25<\/td>\n4.5<\/td>\n13<\/td>\n11.368<\/td>\n11.188<\/td>\n10.912<\/td>\n10.647<\/td>\n<\/tr>\n
    M12\u00d71,5<\/td>\n4.5<\/td>\n13<\/td>\n11.216<\/td>\n11.026<\/td>\n10.676<\/td>\n10.376<\/td>\n<\/tr>\n
    M14\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n13.216<\/td>\n13.026<\/td>\n12.676<\/td>\n12.376<\/td>\n<\/tr>\n
    M16\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n15.216<\/td>\n15.026<\/td>\n14.676<\/td>\n14.376<\/td>\n<\/tr>\n
    M18\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n17.216<\/td>\n17.026<\/td>\n16.676<\/td>\n16.376<\/td>\n<\/tr>\n
    M18\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n16.913<\/td>\n16.701<\/td>\n16.21<\/td>\n15.835<\/td>\n<\/tr>\n
    M20\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n19.216<\/td>\n19.026<\/td>\n18.676<\/td>\n18.376<\/td>\n<\/tr>\n
    M20\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n18.913<\/td>\n18.701<\/td>\n18.21<\/td>\n17.835<\/td>\n<\/tr>\n
    M22\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n21.216<\/td>\n21.026<\/td>\n20.676<\/td>\n20.376<\/td>\n<\/tr>\n
    M22\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n20.913<\/td>\n20.701<\/td>\n20.21<\/td>\n19.835<\/td>\n<\/tr>\n
    M24\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n22.925<\/td>\n22.701<\/td>\n22.21<\/td>\n21.835<\/td>\n<\/tr>\n
    M27\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n25.925<\/td>\n25.701<\/td>\n25.21<\/td>\n24.835<\/td>\n<\/tr>\n
    M30\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n28.925<\/td>\n28.701<\/td>\n28.21<\/td>\n27.835<\/td>\n<\/tr>\n
    M33\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n31.925<\/td>\n31.701<\/td>\n31.21<\/td>\n30.835<\/td>\n<\/tr>\n
    M36\u00d73<\/td>\n12<\/td>\n36<\/td>\n34.316<\/td>\n34.051<\/td>\n33.252<\/td>\n32.752<\/td>\n<\/tr>\n
    M39\u00d73<\/td>\n12<\/td>\n36<\/td>\n37.316<\/td>\n37.051<\/td>\n36.252<\/td>\n35.752<\/td>\n<\/tr>\n
    M42\u00d73<\/td>\n12<\/td>\n36<\/td>\n40.316<\/td>\n40.051<\/td>\n39.252<\/td>\n38.752<\/td>\n<\/tr>\n
    M45\u00d73<\/td>\n12<\/td>\n36<\/td>\n43.316<\/td>\n43.051<\/td>\n42.252<\/td>\n41.752<\/td>\n<\/tr>\n
    M48\u00d73<\/td>\n15<\/td>\n45<\/td>\n46.331<\/td>\n46.051<\/td>\n45.252<\/td>\n44.752<\/td>\n<\/tr>\n
    M52\u00d74<\/td>\n19<\/td>\n56<\/td>\n49.717<\/td>\n49.402<\/td>\n48.27<\/td>\n47.67<\/td>\n<\/tr>\n
    M56\u00d74<\/td>\n19<\/td>\n56<\/td>\n53.717<\/td>\n53.402<\/td>\n52.27<\/td>\n51.67<\/td>\n<\/tr>\n
    M60\u00d74<\/td>\n19<\/td>\n56<\/td>\n57.717<\/td>\n57.402<\/td>\n56.27<\/td>\n55.67<\/td>\n<\/tr>\n
    M64\u00d74<\/td>\n19<\/td>\n56<\/td>\n61.717<\/td>\n61.402<\/td>\n60.27<\/td>\n59.67<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    Diese Werte unterst\u00fctzen eine feinere Lastverteilung in Umgebungen mit starken Vibrationen.<\/p>\n<\/div>\n

    \n

    Feingewinde<\/h2>\n

    Mittlere Pr\u00e4zision, mittlerer Eingriff, Toleranzbereich 6 g. Sorgt f\u00fcr st\u00e4rkere Kernabschnitte und damit f\u00fcr erh\u00f6hte Scherfestigkeit.<\/p>\n

    \n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
    Faden<\/th>\nVerlobungsdauer<\/th>\nHauptdurchmesser d<\/th>\nTeilkreisdurchmesser d2<\/sub><\/th>\nMinimaler WurzelradiusA<\/sup><\/th>\n<\/tr>\n
    ><\/th>\n\u2264<\/th>\nmax<\/th>\nmin<\/th>\nmax<\/th>\nmin<\/th>\nmin<\/th>\n<\/tr>\n<\/thead>\n
    M8\u00d71<\/td>\n3<\/td>\n9<\/td>\n7.974<\/td>\n7.794<\/td>\n7.324<\/td>\n7.212<\/td>\n0.125<\/td>\n<\/tr>\n
    M10\u00d71<\/td>\n4<\/td>\n12<\/td>\n9.974<\/td>\n9.794<\/td>\n9.324<\/td>\n9.212<\/td>\n0.125<\/td>\n<\/tr>\n
    M10\u00d71,25<\/td>\n4<\/td>\n12<\/td>\n9.972<\/td>\n9.76<\/td>\n9.16<\/td>\n9.042<\/td>\n0.156<\/td>\n<\/tr>\n
    M12\u00d71,25<\/td>\n4.5<\/td>\n13<\/td>\n11.972<\/td>\n11.76<\/td>\n11.16<\/td>\n11.028<\/td>\n0.156<\/td>\n<\/tr>\n
    M12\u00d71,5<\/td>\n4.5<\/td>\n13<\/td>\n11.968<\/td>\n11.732<\/td>\n10.994<\/td>\n10.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M14\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n13.968<\/td>\n13.732<\/td>\n12.994<\/td>\n12.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M16\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n15.968<\/td>\n15.732<\/td>\n14.994<\/td>\n14.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M18\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n17.968<\/td>\n17.732<\/td>\n16.994<\/td>\n16.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M18\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n17.962<\/td>\n17.682<\/td>\n16.663<\/td>\n16.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M20\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n19.968<\/td>\n19.732<\/td>\n18.994<\/td>\n18.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M20\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n19.962<\/td>\n19.682<\/td>\n18.663<\/td>\n18.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M22\u00d71,5<\/td>\n5.6<\/td>\n16<\/td>\n21.968<\/td>\n21.732<\/td>\n20.994<\/td>\n20.854<\/td>\n0.188<\/td>\n<\/tr>\n
    M22\u00d72<\/td>\n5.6<\/td>\n16<\/td>\n21.962<\/td>\n21.682<\/td>\n20.663<\/td>\n20.503<\/td>\n0.25<\/td>\n<\/tr>\n
    M24\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n23.962<\/td>\n23.682<\/td>\n22.663<\/td>\n22.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M27\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n26.962<\/td>\n26.682<\/td>\n25.663<\/td>\n25.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M30\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n29.962<\/td>\n29.682<\/td>\n28.663<\/td>\n28.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M33\u00d72<\/td>\n8.5<\/td>\n25<\/td>\n32.962<\/td>\n32.682<\/td>\n31.663<\/td>\n31.493<\/td>\n0.25<\/td>\n<\/tr>\n
    M36\u00d73<\/td>\n12<\/td>\n36<\/td>\n35.952<\/td>\n35.577<\/td>\n34.003<\/td>\n33.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M39\u00d73<\/td>\n12<\/td>\n36<\/td>\n38.952<\/td>\n38.577<\/td>\n37.003<\/td>\n36.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M42\u00d73<\/td>\n12<\/td>\n36<\/td>\n41.952<\/td>\n41.577<\/td>\n40.003<\/td>\n39.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M45\u00d73<\/td>\n12<\/td>\n36<\/td>\n44.952<\/td>\n44.577<\/td>\n43.003<\/td>\n42.803<\/td>\n0.375<\/td>\n<\/tr>\n
    M48\u00d73<\/td>\n15<\/td>\n45<\/td>\n47.952<\/td>\n47.577<\/td>\n46.003<\/td>\n45.791<\/td>\n0.375<\/td>\n<\/tr>\n
    M52\u00d74<\/td>\n19<\/td>\n56<\/td>\n51.94<\/td>\n51.465<\/td>\n49.342<\/td>\n49.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M56\u00d74<\/td>\n19<\/td>\n56<\/td>\n55.94<\/td>\n55.465<\/td>\n53.342<\/td>\n53.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M60\u00d74<\/td>\n19<\/td>\n56<\/td>\n59.94<\/td>\n59.465<\/td>\n57.342<\/td>\n57.106<\/td>\n0.5<\/td>\n<\/tr>\n
    M64\u00d74<\/td>\n19<\/td>\n56<\/td>\n63.94<\/td>\n63.465<\/td>\n61.342<\/td>\n61.106<\/td>\n0.5<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n

    A<\/sup> Die Spezifikationen f\u00fcr den Wurzelradius, der f\u00fcr die Vermeidung von Spannungskonzentrationen entscheidend ist, finden Sie in GB\/T 197-2003.<\/p>\n<\/div>\n

    \n

    H\u00e4ufig gestellte Fragen<\/h2>\n

    Welche Toleranzzonen gelten f\u00fcr grobe Innengewinde?<\/h3>\n

    5H f\u00fcr Durchmesser \u22641,4 mm; 6H f\u00fcr >1,4 mm, gew\u00e4hrleistet eine mittlere Passgenauigkeit.<\/p>\n

    Wie beeinflusst die Beschichtung die Gewindeabmessungen?<\/h3>\n

    Die Toleranzen beziehen sich auf die Zeit vor der Beschichtung; die Profile nach der Beschichtung d\u00fcrfen die H\/h-Positionen bei d\u00fcnnen Beschichtungen nicht \u00fcberschreiten, um die Montage zu gew\u00e4hrleisten.<\/p>\n

    Warum Feingewinde verwenden?<\/h3>\n

    Sie bieten eine bessere Vibrationsfestigkeit und feinere Einstellm\u00f6glichkeiten mit st\u00e4rkeren Kernen gem\u00e4\u00df den Grenzwerten in den Tabellen 3 und 4.<\/p>\n

    Was ist eine mittlere Engagement-Dauer?<\/h3>\n

    Es bietet ein ausgewogenes Verh\u00e4ltnis zwischen Gewindefestigkeit und Kosten; verwenden Sie Tabellenwerte f\u00fcr bestimmte Bereiche, um eine \u00dcber- oder Unterverschraubung zu vermeiden.<\/p>\n

    Wie interpretiert man den Wurzelradius?<\/h3>\n

    Mindestwerte gem\u00e4\u00df GB\/T 197-2003 reduzieren die Belastung; unerl\u00e4sslich f\u00fcr erm\u00fcdungsanf\u00e4llige Anwendungen.<\/p>\n

    Gelten diese Grenzwerte f\u00fcr alle Materialien?<\/h3>\n

    Ja, aber bei speziellen Beschichtungen ist eine Anpassung erforderlich; bei dicken Beschichtungen, die \u00fcbergro\u00dfe Gewinde erfordern, ist die Norm zu konsultieren.<\/p>\n<\/div>\n

     [\/et_pb_text][\/et_pb_column]
    \n\t\t\t[\/et_pb_row]
    \n\t\t[\/et_pb_section]<\/p>","protected":false},"excerpt":{"rendered":"

    Einf\u00fchrung in die Norm GB\/T 9145-2003 Diese Norm legt die Grenzma\u00dfe f\u00fcr metrische Standardgewinde mittlerer Genauigkeit in der bevorzugten Gewindereihe fest und gew\u00e4hrleistet so die Austauschbarkeit und die Leistungsf\u00e4higkeit in mechanischen Baugruppen. Sie umfasst Grob- und Feingewinde f\u00fcr Innen- und Au\u00dfenanwendungen. Die Toleranzen werden vor der Beschichtung d\u00fcnner Gewinde angewendet. Anwendungsbereich GB\/T 9145-2003 definiert die Grenzma\u00dfe [\u2026]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"

    \r\n

    Introduction to GB\/T 9145-2003 Standard<\/h2>\r\nThis standard specifies limit dimensions for general-purpose metric screw threads of medium accuracy in the preferred series, ensuring interchangeability and performance in mechanical assemblies. It covers coarse and fine pitch threads for internal and external applications, with tolerances applied before plating for thin coatings.\r\n\r\n<\/div>\r\n
    \r\n

    Scope<\/h2>\r\nGB\/T 9145-2003 defines the limit dimensions for metric screw threads with medium tolerance precision and preferred series, applicable to general engineering purposes. It ensures that thread profiles do not exceed the maximum material condition defined by basic profiles and tolerance positions. This is crucial for fasteners in industries requiring reliable mating without interference, especially post-plating.\r\n
      \r\n \t
    • Applies to threads before thin coatings like electroplating.<\/li>\r\n \t
    • Post-plating, profiles must stay within H or h positions.<\/li>\r\n \t
    • Focuses on medium engagement lengths for balanced strength and manufacturability.<\/li>\r\n<\/ul>\r\n<\/div>\r\n
      \r\n

      General Limit Dimensions<\/h2>\r\nNo point on the thread root profile shall exceed the maximum entity profile per basic form and tolerance. For plated threads, actual contours post-plating must not surpass H\/h positions. This prevents over-tightening or failure in assemblies. Note: Tolerances suit thin platings; heavier coatings require adjustments.\r\n\r\n<\/div>\r\n
      \r\n

      Coarse Pitch Internal Threads<\/h2>\r\nFor medium precision, engagement length is medium. Tolerance zones: 5H for d \u2264 1.4 mm; 6H for d > 1.4 mm. Limits for pitch diameter D2<\/sub> and minor diameter D1<\/sub> ensure proper fit with external threads.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nPitch Diameter D2<\/sub><\/th>\r\nMinor Diameter D1<\/sub><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M1<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n0.894<\/td>\r\n0.838<\/td>\r\n0.785<\/td>\r\n0.729<\/td>\r\n<\/tr>\r\n
      M1.2<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1.094<\/td>\r\n1.038<\/td>\r\n0.985<\/td>\r\n0.929<\/td>\r\n<\/tr>\r\n
      M1.4<\/td>\r\n0.7<\/td>\r\n2<\/td>\r\n1.265<\/td>\r\n1.205<\/td>\r\n1.142<\/td>\r\n1.075<\/td>\r\n<\/tr>\r\n
      M1.6<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.458<\/td>\r\n1.373<\/td>\r\n1.321<\/td>\r\n1.221<\/td>\r\n<\/tr>\r\n
      M1.8<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.658<\/td>\r\n1.573<\/td>\r\n1.521<\/td>\r\n1.421<\/td>\r\n<\/tr>\r\n
      M2<\/td>\r\n1<\/td>\r\n3<\/td>\r\n1.83<\/td>\r\n1.74<\/td>\r\n1.679<\/td>\r\n1.567<\/td>\r\n<\/tr>\r\n
      M2.5<\/td>\r\n1.3<\/td>\r\n3.8<\/td>\r\n2.303<\/td>\r\n2.208<\/td>\r\n2.138<\/td>\r\n2.013<\/td>\r\n<\/tr>\r\n
      M3<\/td>\r\n1.5<\/td>\r\n4.5<\/td>\r\n2.775<\/td>\r\n2.675<\/td>\r\n2.599<\/td>\r\n2.459<\/td>\r\n<\/tr>\r\n
      M3.5<\/td>\r\n1.7<\/td>\r\n5<\/td>\r\n3.222<\/td>\r\n3.11<\/td>\r\n3.01<\/td>\r\n2.85<\/td>\r\n<\/tr>\r\n
      M4<\/td>\r\n2<\/td>\r\n6<\/td>\r\n3.663<\/td>\r\n3.545<\/td>\r\n3.422<\/td>\r\n3.242<\/td>\r\n<\/tr>\r\n
      M5<\/td>\r\n2.5<\/td>\r\n7.5<\/td>\r\n4.605<\/td>\r\n4.48<\/td>\r\n4.334<\/td>\r\n4.134<\/td>\r\n<\/tr>\r\n
      M6<\/td>\r\n3<\/td>\r\n9<\/td>\r\n5.5<\/td>\r\n5.35<\/td>\r\n5.153<\/td>\r\n4.917<\/td>\r\n<\/tr>\r\n
      M7<\/td>\r\n3<\/td>\r\n9<\/td>\r\n6.5<\/td>\r\n6.35<\/td>\r\n6.153<\/td>\r\n5.917<\/td>\r\n<\/tr>\r\n
      M8<\/td>\r\n4<\/td>\r\n12<\/td>\r\n7.348<\/td>\r\n7.188<\/td>\r\n6.912<\/td>\r\n6.647<\/td>\r\n<\/tr>\r\n
      M10<\/td>\r\n5<\/td>\r\n15<\/td>\r\n9.206<\/td>\r\n9.026<\/td>\r\n8.676<\/td>\r\n8.376<\/td>\r\n<\/tr>\r\n
      M12<\/td>\r\n6<\/td>\r\n18<\/td>\r\n11.063<\/td>\r\n10.863<\/td>\r\n10.441<\/td>\r\n10.106<\/td>\r\n<\/tr>\r\n
      M14<\/td>\r\n8<\/td>\r\n24<\/td>\r\n12.913<\/td>\r\n12.701<\/td>\r\n12.21<\/td>\r\n11.835<\/td>\r\n<\/tr>\r\n
      M16<\/td>\r\n8<\/td>\r\n24<\/td>\r\n14.913<\/td>\r\n14.701<\/td>\r\n14.21<\/td>\r\n13.835<\/td>\r\n<\/tr>\r\n
      M18<\/td>\r\n10<\/td>\r\n30<\/td>\r\n16.6<\/td>\r\n16.376<\/td>\r\n15.744<\/td>\r\n15.294<\/td>\r\n<\/tr>\r\n
      M20<\/td>\r\n10<\/td>\r\n30<\/td>\r\n18.6<\/td>\r\n18.376<\/td>\r\n17.744<\/td>\r\n17.294<\/td>\r\n<\/tr>\r\n
      M22<\/td>\r\n10<\/td>\r\n30<\/td>\r\n20.6<\/td>\r\n20.376<\/td>\r\n19.744<\/td>\r\n19.294<\/td>\r\n<\/tr>\r\n
      M24<\/td>\r\n12<\/td>\r\n36<\/td>\r\n22.316<\/td>\r\n22.051<\/td>\r\n21.252<\/td>\r\n20.752<\/td>\r\n<\/tr>\r\n
      M27<\/td>\r\n12<\/td>\r\n36<\/td>\r\n25.316<\/td>\r\n25.051<\/td>\r\n24.252<\/td>\r\n23.752<\/td>\r\n<\/tr>\r\n
      M30<\/td>\r\n15<\/td>\r\n45<\/td>\r\n28.007<\/td>\r\n27.727<\/td>\r\n26.771<\/td>\r\n26.211<\/td>\r\n<\/tr>\r\n
      M33<\/td>\r\n15<\/td>\r\n45<\/td>\r\n31.007<\/td>\r\n30.727<\/td>\r\n29.771<\/td>\r\n29.211<\/td>\r\n<\/tr>\r\n
      M36<\/td>\r\n18<\/td>\r\n53<\/td>\r\n33.702<\/td>\r\n33.402<\/td>\r\n32.27<\/td>\r\n31.67<\/td>\r\n<\/tr>\r\n
      M39<\/td>\r\n18<\/td>\r\n53<\/td>\r\n36.702<\/td>\r\n36.402<\/td>\r\n35.27<\/td>\r\n34.67<\/td>\r\n<\/tr>\r\n
      M42<\/td>\r\n21<\/td>\r\n63<\/td>\r\n39.392<\/td>\r\n39.077<\/td>\r\n37.799<\/td>\r\n37.129<\/td>\r\n<\/tr>\r\n
      M45<\/td>\r\n21<\/td>\r\n63<\/td>\r\n42.392<\/td>\r\n42.077<\/td>\r\n40.799<\/td>\r\n40.129<\/td>\r\n<\/tr>\r\n
      M48<\/td>\r\n24<\/td>\r\n71<\/td>\r\n45.087<\/td>\r\n44.752<\/td>\r\n43.297<\/td>\r\n42.587<\/td>\r\n<\/tr>\r\n
      M52<\/td>\r\n24<\/td>\r\n71<\/td>\r\n49.087<\/td>\r\n48.752<\/td>\r\n46.681<\/td>\r\n45.971<\/td>\r\n<\/tr>\r\n
      M56<\/td>\r\n28<\/td>\r\n85<\/td>\r\n52.783<\/td>\r\n52.428<\/td>\r\n50.796<\/td>\r\n50.046<\/td>\r\n<\/tr>\r\n
      M60<\/td>\r\n28<\/td>\r\n85<\/td>\r\n56.783<\/td>\r\n56.428<\/td>\r\n54.796<\/td>\r\n54.046<\/td>\r\n<\/tr>\r\n
      M64<\/td>\r\n32<\/td>\r\n95<\/td>\r\n60.478<\/td>\r\n60.103<\/td>\r\n58.305<\/td>\r\n57.505<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\nThese dimensions provide guidance for nut manufacturing, ensuring compatibility with bolts under medium load conditions.\r\n\r\n<\/div>\r\n
      \r\n

      Coarse Pitch External Threads<\/h2>\r\nMedium precision, medium engagement. Tolerance zones: 6h for d \u2264 1.4 mm; 6g for d > 1.4 mm. Limits for major diameter d and pitch diameter d2<\/sub>, with min root radius per GB\/T 197-2003.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nMajor Diameter d<\/th>\r\nPitch Diameter d2<\/sub><\/th>\r\nMin Root Radiusa<\/sup><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M1<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1<\/td>\r\n0.933<\/td>\r\n0.838<\/td>\r\n0.785<\/td>\r\n0.031<\/td>\r\n<\/tr>\r\n
      M1.2<\/td>\r\n0.6<\/td>\r\n1.7<\/td>\r\n1.2<\/td>\r\n1.133<\/td>\r\n1.038<\/td>\r\n0.985<\/td>\r\n0.031<\/td>\r\n<\/tr>\r\n
      M1.4<\/td>\r\n0.7<\/td>\r\n2<\/td>\r\n1.4<\/td>\r\n1.325<\/td>\r\n1.205<\/td>\r\n1.149<\/td>\r\n0.038<\/td>\r\n<\/tr>\r\n
      M1.6<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.581<\/td>\r\n1.496<\/td>\r\n1.354<\/td>\r\n1.291<\/td>\r\n0.044<\/td>\r\n<\/tr>\r\n
      M1.8<\/td>\r\n0.8<\/td>\r\n2.6<\/td>\r\n1.781<\/td>\r\n1.696<\/td>\r\n1.554<\/td>\r\n1.491<\/td>\r\n0.044<\/td>\r\n<\/tr>\r\n
      M2<\/td>\r\n1<\/td>\r\n3<\/td>\r\n1.981<\/td>\r\n1.886<\/td>\r\n1.721<\/td>\r\n1.654<\/td>\r\n0.05<\/td>\r\n<\/tr>\r\n
      M2.5<\/td>\r\n1.3<\/td>\r\n3.8<\/td>\r\n2.48<\/td>\r\n2.38<\/td>\r\n2.188<\/td>\r\n2.117<\/td>\r\n0.056<\/td>\r\n<\/tr>\r\n
      M3<\/td>\r\n1.5<\/td>\r\n4.5<\/td>\r\n2.98<\/td>\r\n2.874<\/td>\r\n2.655<\/td>\r\n2.58<\/td>\r\n0.063<\/td>\r\n<\/tr>\r\n
      M3.5<\/td>\r\n1.7<\/td>\r\n5<\/td>\r\n3.479<\/td>\r\n3.354<\/td>\r\n3.089<\/td>\r\n3.004<\/td>\r\n0.075<\/td>\r\n<\/tr>\r\n
      M4<\/td>\r\n2<\/td>\r\n6<\/td>\r\n3.978<\/td>\r\n3.838<\/td>\r\n3.523<\/td>\r\n3.433<\/td>\r\n0.088<\/td>\r\n<\/tr>\r\n
      M5<\/td>\r\n2.5<\/td>\r\n7.5<\/td>\r\n4.976<\/td>\r\n4.826<\/td>\r\n4.456<\/td>\r\n4.361<\/td>\r\n0.1<\/td>\r\n<\/tr>\r\n
      M6<\/td>\r\n3<\/td>\r\n9<\/td>\r\n5.974<\/td>\r\n5.794<\/td>\r\n5.324<\/td>\r\n5.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M7<\/td>\r\n3<\/td>\r\n9<\/td>\r\n6.974<\/td>\r\n6.794<\/td>\r\n6.324<\/td>\r\n6.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M8<\/td>\r\n4<\/td>\r\n12<\/td>\r\n7.972<\/td>\r\n7.76<\/td>\r\n7.16<\/td>\r\n7.042<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M10<\/td>\r\n5<\/td>\r\n15<\/td>\r\n9.968<\/td>\r\n9.732<\/td>\r\n8.994<\/td>\r\n8.862<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M12<\/td>\r\n6<\/td>\r\n18<\/td>\r\n11.966<\/td>\r\n11.701<\/td>\r\n10.829<\/td>\r\n10.679<\/td>\r\n0.219<\/td>\r\n<\/tr>\r\n
      M14<\/td>\r\n8<\/td>\r\n24<\/td>\r\n13.962<\/td>\r\n13.682<\/td>\r\n12.663<\/td>\r\n12.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M16<\/td>\r\n8<\/td>\r\n24<\/td>\r\n15.962<\/td>\r\n15.682<\/td>\r\n14.663<\/td>\r\n14.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M18<\/td>\r\n10<\/td>\r\n30<\/td>\r\n17.958<\/td>\r\n17.623<\/td>\r\n16.334<\/td>\r\n16.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M20<\/td>\r\n10<\/td>\r\n30<\/td>\r\n19.958<\/td>\r\n19.623<\/td>\r\n18.334<\/td>\r\n18.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M22<\/td>\r\n10<\/td>\r\n30<\/td>\r\n21.958<\/td>\r\n21.623<\/td>\r\n20.334<\/td>\r\n20.164<\/td>\r\n0.313<\/td>\r\n<\/tr>\r\n
      M24<\/td>\r\n12<\/td>\r\n36<\/td>\r\n23.952<\/td>\r\n23.577<\/td>\r\n22.003<\/td>\r\n21.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M27<\/td>\r\n12<\/td>\r\n36<\/td>\r\n26.952<\/td>\r\n26.577<\/td>\r\n25.003<\/td>\r\n24.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M30<\/td>\r\n15<\/td>\r\n45<\/td>\r\n29.947<\/td>\r\n29.522<\/td>\r\n27.674<\/td>\r\n27.462<\/td>\r\n0.438<\/td>\r\n<\/tr>\r\n
      M33<\/td>\r\n15<\/td>\r\n45<\/td>\r\n32.947<\/td>\r\n32.522<\/td>\r\n30.674<\/td>\r\n30.462<\/td>\r\n0.438<\/td>\r\n<\/tr>\r\n
      M36<\/td>\r\n18<\/td>\r\n53<\/td>\r\n35.94<\/td>\r\n35.465<\/td>\r\n33.342<\/td>\r\n33.118<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M39<\/td>\r\n18<\/td>\r\n53<\/td>\r\n38.94<\/td>\r\n38.465<\/td>\r\n36.342<\/td>\r\n36.118<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M42<\/td>\r\n21<\/td>\r\n63<\/td>\r\n41.937<\/td>\r\n41.437<\/td>\r\n39.014<\/td>\r\n38.778<\/td>\r\n0.563<\/td>\r\n<\/tr>\r\n
      M45<\/td>\r\n21<\/td>\r\n63<\/td>\r\n44.937<\/td>\r\n44.437<\/td>\r\n42.014<\/td>\r\n41.778<\/td>\r\n0.563<\/td>\r\n<\/tr>\r\n
      M48<\/td>\r\n24<\/td>\r\n71<\/td>\r\n47.929<\/td>\r\n47.399<\/td>\r\n44.681<\/td>\r\n44.431<\/td>\r\n0.625<\/td>\r\n<\/tr>\r\n
      M52<\/td>\r\n24<\/td>\r\n71<\/td>\r\n51.929<\/td>\r\n51.399<\/td>\r\n48.681<\/td>\r\n48.431<\/td>\r\n0.625<\/td>\r\n<\/tr>\r\n
      M56<\/td>\r\n28<\/td>\r\n85<\/td>\r\n55.925<\/td>\r\n55.365<\/td>\r\n52.353<\/td>\r\n52.088<\/td>\r\n0.688<\/td>\r\n<\/tr>\r\n
      M60<\/td>\r\n28<\/td>\r\n85<\/td>\r\n59.925<\/td>\r\n59.365<\/td>\r\n56.353<\/td>\r\n56.088<\/td>\r\n0.688<\/td>\r\n<\/tr>\r\n
      M64<\/td>\r\n32<\/td>\r\n95<\/td>\r\n63.92<\/td>\r\n63.32<\/td>\r\n60.023<\/td>\r\n59.743<\/td>\r\n0.75<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\na<\/sup> See GB\/T 197-2003 Chapter 7 and Table 9 for root radius details. These ensure stress distribution and fatigue resistance.\r\n\r\n<\/div>\r\n
      \r\n

      Fine Pitch Internal Threads<\/h2>\r\nMedium precision, medium engagement, 6H tolerance zone. Fine pitches offer better vibration resistance and adjustment precision.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nPitch Diameter D2<\/sub><\/th>\r\nMinor Diameter D1<\/sub><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M8\u00d71<\/td>\r\n3<\/td>\r\n9<\/td>\r\n7.5<\/td>\r\n7.35<\/td>\r\n7.153<\/td>\r\n6.917<\/td>\r\n<\/tr>\r\n
      M10\u00d71<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.5<\/td>\r\n9.35<\/td>\r\n9.153<\/td>\r\n8.917<\/td>\r\n<\/tr>\r\n
      M10\u00d71.25<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.348<\/td>\r\n9.188<\/td>\r\n8.912<\/td>\r\n8.647<\/td>\r\n<\/tr>\r\n
      M12\u00d71.25<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.368<\/td>\r\n11.188<\/td>\r\n10.912<\/td>\r\n10.647<\/td>\r\n<\/tr>\r\n
      M12\u00d71.5<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.216<\/td>\r\n11.026<\/td>\r\n10.676<\/td>\r\n10.376<\/td>\r\n<\/tr>\r\n
      M14\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n13.216<\/td>\r\n13.026<\/td>\r\n12.676<\/td>\r\n12.376<\/td>\r\n<\/tr>\r\n
      M16\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n15.216<\/td>\r\n15.026<\/td>\r\n14.676<\/td>\r\n14.376<\/td>\r\n<\/tr>\r\n
      M18\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.216<\/td>\r\n17.026<\/td>\r\n16.676<\/td>\r\n16.376<\/td>\r\n<\/tr>\r\n
      M18\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n16.913<\/td>\r\n16.701<\/td>\r\n16.21<\/td>\r\n15.835<\/td>\r\n<\/tr>\r\n
      M20\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.216<\/td>\r\n19.026<\/td>\r\n18.676<\/td>\r\n18.376<\/td>\r\n<\/tr>\r\n
      M20\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n18.913<\/td>\r\n18.701<\/td>\r\n18.21<\/td>\r\n17.835<\/td>\r\n<\/tr>\r\n
      M22\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.216<\/td>\r\n21.026<\/td>\r\n20.676<\/td>\r\n20.376<\/td>\r\n<\/tr>\r\n
      M22\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n20.913<\/td>\r\n20.701<\/td>\r\n20.21<\/td>\r\n19.835<\/td>\r\n<\/tr>\r\n
      M24\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n22.925<\/td>\r\n22.701<\/td>\r\n22.21<\/td>\r\n21.835<\/td>\r\n<\/tr>\r\n
      M27\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n25.925<\/td>\r\n25.701<\/td>\r\n25.21<\/td>\r\n24.835<\/td>\r\n<\/tr>\r\n
      M30\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n28.925<\/td>\r\n28.701<\/td>\r\n28.21<\/td>\r\n27.835<\/td>\r\n<\/tr>\r\n
      M33\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n31.925<\/td>\r\n31.701<\/td>\r\n31.21<\/td>\r\n30.835<\/td>\r\n<\/tr>\r\n
      M36\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n34.316<\/td>\r\n34.051<\/td>\r\n33.252<\/td>\r\n32.752<\/td>\r\n<\/tr>\r\n
      M39\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n37.316<\/td>\r\n37.051<\/td>\r\n36.252<\/td>\r\n35.752<\/td>\r\n<\/tr>\r\n
      M42\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n40.316<\/td>\r\n40.051<\/td>\r\n39.252<\/td>\r\n38.752<\/td>\r\n<\/tr>\r\n
      M45\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n43.316<\/td>\r\n43.051<\/td>\r\n42.252<\/td>\r\n41.752<\/td>\r\n<\/tr>\r\n
      M48\u00d73<\/td>\r\n15<\/td>\r\n45<\/td>\r\n46.331<\/td>\r\n46.051<\/td>\r\n45.252<\/td>\r\n44.752<\/td>\r\n<\/tr>\r\n
      M52\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n49.717<\/td>\r\n49.402<\/td>\r\n48.27<\/td>\r\n47.67<\/td>\r\n<\/tr>\r\n
      M56\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n53.717<\/td>\r\n53.402<\/td>\r\n52.27<\/td>\r\n51.67<\/td>\r\n<\/tr>\r\n
      M60\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n57.717<\/td>\r\n57.402<\/td>\r\n56.27<\/td>\r\n55.67<\/td>\r\n<\/tr>\r\n
      M64\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n61.717<\/td>\r\n61.402<\/td>\r\n60.27<\/td>\r\n59.67<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\nThese values support finer load distribution in high-vibration environments.\r\n\r\n<\/div>\r\n
      \r\n

      Fine Pitch External Threads<\/h2>\r\nMedium precision, medium engagement, 6g tolerance zone. Provides stronger core sections for enhanced shear strength.\r\n
      \r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n\r\n
      Thread<\/th>\r\nEngagement Length<\/th>\r\nMajor Diameter d<\/th>\r\nPitch Diameter d2<\/sub><\/th>\r\nMin Root Radiusa<\/sup><\/th>\r\n<\/tr>\r\n
      ><\/th>\r\n\u2264<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmax<\/th>\r\nmin<\/th>\r\nmin<\/th>\r\n<\/tr>\r\n<\/thead>\r\n
      M8\u00d71<\/td>\r\n3<\/td>\r\n9<\/td>\r\n7.974<\/td>\r\n7.794<\/td>\r\n7.324<\/td>\r\n7.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M10\u00d71<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.974<\/td>\r\n9.794<\/td>\r\n9.324<\/td>\r\n9.212<\/td>\r\n0.125<\/td>\r\n<\/tr>\r\n
      M10\u00d71.25<\/td>\r\n4<\/td>\r\n12<\/td>\r\n9.972<\/td>\r\n9.76<\/td>\r\n9.16<\/td>\r\n9.042<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M12\u00d71.25<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.972<\/td>\r\n11.76<\/td>\r\n11.16<\/td>\r\n11.028<\/td>\r\n0.156<\/td>\r\n<\/tr>\r\n
      M12\u00d71.5<\/td>\r\n4.5<\/td>\r\n13<\/td>\r\n11.968<\/td>\r\n11.732<\/td>\r\n10.994<\/td>\r\n10.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M14\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n13.968<\/td>\r\n13.732<\/td>\r\n12.994<\/td>\r\n12.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M16\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n15.968<\/td>\r\n15.732<\/td>\r\n14.994<\/td>\r\n14.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M18\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.968<\/td>\r\n17.732<\/td>\r\n16.994<\/td>\r\n16.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M18\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n17.962<\/td>\r\n17.682<\/td>\r\n16.663<\/td>\r\n16.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M20\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.968<\/td>\r\n19.732<\/td>\r\n18.994<\/td>\r\n18.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M20\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n19.962<\/td>\r\n19.682<\/td>\r\n18.663<\/td>\r\n18.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M22\u00d71.5<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.968<\/td>\r\n21.732<\/td>\r\n20.994<\/td>\r\n20.854<\/td>\r\n0.188<\/td>\r\n<\/tr>\r\n
      M22\u00d72<\/td>\r\n5.6<\/td>\r\n16<\/td>\r\n21.962<\/td>\r\n21.682<\/td>\r\n20.663<\/td>\r\n20.503<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M24\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n23.962<\/td>\r\n23.682<\/td>\r\n22.663<\/td>\r\n22.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M27\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n26.962<\/td>\r\n26.682<\/td>\r\n25.663<\/td>\r\n25.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M30\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n29.962<\/td>\r\n29.682<\/td>\r\n28.663<\/td>\r\n28.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M33\u00d72<\/td>\r\n8.5<\/td>\r\n25<\/td>\r\n32.962<\/td>\r\n32.682<\/td>\r\n31.663<\/td>\r\n31.493<\/td>\r\n0.25<\/td>\r\n<\/tr>\r\n
      M36\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n35.952<\/td>\r\n35.577<\/td>\r\n34.003<\/td>\r\n33.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M39\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n38.952<\/td>\r\n38.577<\/td>\r\n37.003<\/td>\r\n36.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M42\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n41.952<\/td>\r\n41.577<\/td>\r\n40.003<\/td>\r\n39.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M45\u00d73<\/td>\r\n12<\/td>\r\n36<\/td>\r\n44.952<\/td>\r\n44.577<\/td>\r\n43.003<\/td>\r\n42.803<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M48\u00d73<\/td>\r\n15<\/td>\r\n45<\/td>\r\n47.952<\/td>\r\n47.577<\/td>\r\n46.003<\/td>\r\n45.791<\/td>\r\n0.375<\/td>\r\n<\/tr>\r\n
      M52\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n51.94<\/td>\r\n51.465<\/td>\r\n49.342<\/td>\r\n49.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M56\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n55.94<\/td>\r\n55.465<\/td>\r\n53.342<\/td>\r\n53.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M60\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n59.94<\/td>\r\n59.465<\/td>\r\n57.342<\/td>\r\n57.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n
      M64\u00d74<\/td>\r\n19<\/td>\r\n56<\/td>\r\n63.94<\/td>\r\n63.465<\/td>\r\n61.342<\/td>\r\n61.106<\/td>\r\n0.5<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n<\/div>\r\na<\/sup> See GB\/T 197-2003 for root radius specifications, critical for avoiding stress concentrations.\r\n\r\n<\/div>\r\n
      \r\n

      FAQ<\/h2>\r\n

      What tolerance zones apply to coarse internal threads?<\/h3>\r\n5H for diameters \u22641.4 mm; 6H for >1.4 mm, ensuring medium precision fit.\r\n

      How does plating affect thread dimensions?<\/h3>\r\nTolerances are pre-plating; post-plating profiles must not exceed H\/h positions for thin coatings to maintain assembly.\r\n

      Why use fine pitch threads?<\/h3>\r\nThey provide better vibration resistance and finer adjustments, with stronger cores per limits in tables 3 and 4.\r\n

      What is medium engagement length?<\/h3>\r\nIt balances thread strength and cost; use table values for specific ranges to avoid over- or under-engagement.\r\n

      How to interpret root radius?<\/h3>\r\nMin values per GB\/T 197-2003 reduce stress; essential for fatigue-prone applications.\r\n

      Are these limits for all materials?<\/h3>\r\nYes, but adjust for special platings; consult standard for heavy coatings requiring oversized threads.\r\n\r\n<\/div>\r\n ","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5757","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/posts\/5757","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/comments?post=5757"}],"version-history":[{"count":3,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/posts\/5757\/revisions"}],"predecessor-version":[{"id":5760,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/posts\/5757\/revisions\/5760"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/media?parent=5757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/categories?post=5757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/de\/wp-json\/wp\/v2\/tags?post=5757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}