{"id":5727,"date":"2025-12-24T03:02:31","date_gmt":"2025-12-24T03:02:31","guid":{"rendered":"https:\/\/korea-transmission.com\/?p=5727"},"modified":"2025-12-24T03:02:31","modified_gmt":"2025-12-24T03:02:31","slug":"bolt-screw-stud-length-standards-guide","status":"publish","type":"post","link":"https:\/\/korea-transmission.com\/es\/blog\/bolt-screw-stud-length-standards-guide\/","title":{"rendered":"Gu\u00eda de est\u00e1ndares de longitud de pernos, tornillos y esp\u00e1rragos"},"content":{"rendered":"<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Esquema del art\u00edculo<\/h2>\n<p style=\"margin: 10px 0;\">Esta gu\u00eda detalla las normas para longitudes nominales y longitudes de rosca de pernos, tornillos y esp\u00e1rragos, basadas en la norma ISO 888:2012 y las tolerancias relacionadas de la norma ISO 4759-1. La estructura es la siguiente:<\/p>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li>Introducci\u00f3n a las normas de longitud<\/li>\n<li>Est\u00e1ndares de longitud nominal<\/li>\n<li>Est\u00e1ndares de longitud de rosca<\/li>\n<li>Notas clave y c\u00e1lculos<\/li>\n<li>Preguntas frecuentes (FAQ)<\/li>\n<\/ol>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Introducci\u00f3n a las normas de longitud<\/h2>\n<p style=\"margin: 10px 0;\">Las normas para longitudes nominales y de rosca de pernos, tornillos y esp\u00e1rragos garantizan la intercambiabilidad, la uniformidad del dise\u00f1o, una gesti\u00f3n eficiente de los materiales, una mayor eficiencia en la producci\u00f3n y el cumplimiento de las normativas del sector. Estas normas, alineadas con la ISO 888:2012 para longitudes y la ISO 4759-1 para tolerancias, facilitan la fabricaci\u00f3n y aplicaci\u00f3n uniformes en sectores como el automotriz, la construcci\u00f3n y la maquinaria.<\/p>\n<p style=\"margin: 10px 0;\">La adopci\u00f3n de longitudes estandarizadas minimiza los problemas de instalaci\u00f3n, simplifica el inventario y reduce los costos. Las clasificaciones de producto A, B y C definen los niveles de tolerancia: la clasificaci\u00f3n A ofrece la tolerancia m\u00e1s estricta para aplicaciones de precisi\u00f3n, la B para uso general y la C para situaciones menos cr\u00edticas.<\/p>\n<ul style=\"margin: 10px 0 10px 20px;\">\n<li>Intercambiabilidad: Permite la sustituci\u00f3n sin problemas por piezas de diferentes fabricantes.<\/li>\n<li>Coherencia en el dise\u00f1o: Promueve pr\u00e1cticas de ingenier\u00eda uniformes.<\/li>\n<li>Gesti\u00f3n de materiales: Optimiza el control de existencias y las compras.<\/li>\n<li>Eficiencia de producci\u00f3n: Optimiza los procesos de fabricaci\u00f3n.<\/li>\n<li>Cumplimiento normativo: Cumple con las normas nacionales e internacionales.<\/li>\n<\/ul>\n<p style=\"margin: 10px 0;\">Estas directrices proporcionan una gu\u00eda pr\u00e1ctica para seleccionar las longitudes adecuadas, garantizando la integridad estructural y el rendimiento en los conjuntos fijados.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Est\u00e1ndares de longitud nominal<\/h2>\n<p style=\"margin: 10px 0;\">Las longitudes nominales de pernos, tornillos y esp\u00e1rragos cumplen con la norma ISO 888:2012, con tolerancias seg\u00fan la norma ISO 4759-1. La tabla a continuaci\u00f3n muestra las longitudes nominales preferidas (l) en mm, junto con los valores m\u00ednimos y m\u00e1ximos para los grados A, B y C. Evite, en la medida de lo posible, las longitudes entre par\u00e9ntesis, ya que son preferencias secundarias.<\/p>\n<p style=\"margin: 10px 0;\">Las tolerancias de grado A son m\u00e1s estrictas (js15 para l \u2264 150 mm, js17 para l &gt; 150 mm), adecuadas para aplicaciones de alta precisi\u00f3n. El grado B utiliza js17 de forma uniforme, equilibrando coste y precisi\u00f3n. El grado C aplica js17 para l \u2264 150 mm y \u00b1IT17 para tama\u00f1os mayores, para aplicaciones econ\u00f3micas.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Longitud nominal l (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Grado A (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Grado B (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\" colspan=\"2\">Grado C (mm)<\/th>\n<\/tr>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\"><\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00ednimo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00e1ximo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00ednimo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00e1ximo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00ednimo<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">M\u00e1ximo<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td>1.80<\/td>\n<td>2.20<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(2.5)<\/td>\n<td>2.30<\/td>\n<td>2.70<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td>2.80<\/td>\n<td>3.20<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td>3.76<\/td>\n<td>4.24<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/td>\n<td>4.76<\/td>\n<td>5.24<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/td>\n<td>5.76<\/td>\n<td>6.24<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(7)<\/td>\n<td>6.71<\/td>\n<td>7.29<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td>7.71<\/td>\n<td>8.29<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(9)<\/td>\n<td>8.71<\/td>\n<td>9.29<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/td>\n<td>9.71<\/td>\n<td>10.29<\/td>\n<td>9.25<\/td>\n<td>10.75<\/td>\n<td>9.25<\/td>\n<td>10.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(11)<\/td>\n<td>10.65<\/td>\n<td>11.35<\/td>\n<td>10.10<\/td>\n<td>11.90<\/td>\n<td>10.10<\/td>\n<td>11.90<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td>11.65<\/td>\n<td>12.35<\/td>\n<td>11.10<\/td>\n<td>12.90<\/td>\n<td>11.10<\/td>\n<td>12.90<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(14)<\/td>\n<td>13.65<\/td>\n<td>14.35<\/td>\n<td>13.10<\/td>\n<td>14.90<\/td>\n<td>13.10<\/td>\n<td>14.90<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td>15.65<\/td>\n<td>16.35<\/td>\n<td>15.10<\/td>\n<td>16.90<\/td>\n<td>15.10<\/td>\n<td>16.90<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(18)<\/td>\n<td>17.65<\/td>\n<td>18.35<\/td>\n<td>17.10<\/td>\n<td>18.90<\/td>\n<td>17.10<\/td>\n<td>18.90<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td>19.58<\/td>\n<td>20.42<\/td>\n<td>18.95<\/td>\n<td>21.05<\/td>\n<td>18.95<\/td>\n<td>21.05<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(22)<\/td>\n<td>21.58<\/td>\n<td>22.42<\/td>\n<td>20.95<\/td>\n<td>23.05<\/td>\n<td>20.95<\/td>\n<td>23.05<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">25<\/td>\n<td>24.58<\/td>\n<td>25.42<\/td>\n<td>23.95<\/td>\n<td>26.05<\/td>\n<td>23.95<\/td>\n<td>26.05<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(28)<\/td>\n<td>27.58<\/td>\n<td>28.42<\/td>\n<td>26.95<\/td>\n<td>29.05<\/td>\n<td>26.95<\/td>\n<td>29.05<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td>29.58<\/td>\n<td>30.42<\/td>\n<td>28.95<\/td>\n<td>31.05<\/td>\n<td>28.95<\/td>\n<td>31.05<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(32)<\/td>\n<td>31.50<\/td>\n<td>32.50<\/td>\n<td>30.75<\/td>\n<td>33.25<\/td>\n<td>30.75<\/td>\n<td>33.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">35<\/td>\n<td>34.50<\/td>\n<td>35.50<\/td>\n<td>33.75<\/td>\n<td>36.25<\/td>\n<td>33.75<\/td>\n<td>36.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(38)<\/td>\n<td>37.50<\/td>\n<td>38.50<\/td>\n<td>36.75<\/td>\n<td>39.25<\/td>\n<td>36.75<\/td>\n<td>39.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">40<\/td>\n<td>39.50<\/td>\n<td>40.50<\/td>\n<td>38.75<\/td>\n<td>41.25<\/td>\n<td>38.75<\/td>\n<td>41.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">45<\/td>\n<td>44.50<\/td>\n<td>45.50<\/td>\n<td>43.75<\/td>\n<td>46.25<\/td>\n<td>43.75<\/td>\n<td>46.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">50<\/td>\n<td>49.50<\/td>\n<td>50.50<\/td>\n<td>48.75<\/td>\n<td>51.25<\/td>\n<td>48.75<\/td>\n<td>51.25<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">55<\/td>\n<td>54.40<\/td>\n<td>55.60<\/td>\n<td>53.50<\/td>\n<td>56.50<\/td>\n<td>53.50<\/td>\n<td>56.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">60<\/td>\n<td>59.40<\/td>\n<td>60.60<\/td>\n<td>58.50<\/td>\n<td>61.50<\/td>\n<td>58.50<\/td>\n<td>61.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">65<\/td>\n<td>64.40<\/td>\n<td>65.60<\/td>\n<td>63.50<\/td>\n<td>66.50<\/td>\n<td>63.50<\/td>\n<td>66.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">70<\/td>\n<td>69.40<\/td>\n<td>70.60<\/td>\n<td>68.50<\/td>\n<td>71.50<\/td>\n<td>68.50<\/td>\n<td>71.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(75)<\/td>\n<td>74.40<\/td>\n<td>75.60<\/td>\n<td>73.50<\/td>\n<td>76.50<\/td>\n<td>73.50<\/td>\n<td>76.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">80<\/td>\n<td>79.40<\/td>\n<td>80.60<\/td>\n<td>78.50<\/td>\n<td>81.50<\/td>\n<td>78.50<\/td>\n<td>81.50<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(85)<\/td>\n<td>84.30<\/td>\n<td>85.70<\/td>\n<td>83.25<\/td>\n<td>86.75<\/td>\n<td>83.25<\/td>\n<td>86.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">90<\/td>\n<td>89.30<\/td>\n<td>90.70<\/td>\n<td>88.25<\/td>\n<td>91.75<\/td>\n<td>88.25<\/td>\n<td>91.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(95)<\/td>\n<td>94.30<\/td>\n<td>95.70<\/td>\n<td>93.25<\/td>\n<td>96.75<\/td>\n<td>93.25<\/td>\n<td>96.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">100<\/td>\n<td>99.30<\/td>\n<td>100.70<\/td>\n<td>98.25<\/td>\n<td>101.75<\/td>\n<td>98.25<\/td>\n<td>101.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(105)<\/td>\n<td>104.30<\/td>\n<td>105.70<\/td>\n<td>103.25<\/td>\n<td>106.75<\/td>\n<td>103.25<\/td>\n<td>106.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">110<\/td>\n<td>109.30<\/td>\n<td>110.70<\/td>\n<td>108.25<\/td>\n<td>111.75<\/td>\n<td>108.25<\/td>\n<td>111.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(115)<\/td>\n<td>114.30<\/td>\n<td>115.70<\/td>\n<td>113.25<\/td>\n<td>116.75<\/td>\n<td>113.25<\/td>\n<td>116.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">120<\/td>\n<td>119.30<\/td>\n<td>120.70<\/td>\n<td>118.25<\/td>\n<td>121.75<\/td>\n<td>118.25<\/td>\n<td>121.75<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(125)<\/td>\n<td>124.20<\/td>\n<td>125.80<\/td>\n<td>123.00<\/td>\n<td>127.00<\/td>\n<td>123.00<\/td>\n<td>127.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">130<\/td>\n<td>129.20<\/td>\n<td>130.80<\/td>\n<td>128.00<\/td>\n<td>132.00<\/td>\n<td>128.00<\/td>\n<td>132.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">140<\/td>\n<td>139.20<\/td>\n<td>140.80<\/td>\n<td>138.00<\/td>\n<td>142.00<\/td>\n<td>138.00<\/td>\n<td>142.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">150<\/td>\n<td>149.20<\/td>\n<td>150.80<\/td>\n<td>148.00<\/td>\n<td>152.00<\/td>\n<td>148.00<\/td>\n<td>152.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">160<\/td>\n<td>159.20<\/td>\n<td>160.80<\/td>\n<td>158.00<\/td>\n<td>162.00<\/td>\n<td>158.00<\/td>\n<td>162.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(170)<\/td>\n<td>169.20<\/td>\n<td>170.80<\/td>\n<td>168.00<\/td>\n<td>172.00<\/td>\n<td>166.00<\/td>\n<td>174.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">180<\/td>\n<td>179.20<\/td>\n<td>180.80<\/td>\n<td>178.00<\/td>\n<td>182.00<\/td>\n<td>176.00<\/td>\n<td>184.00<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(190)<\/td>\n<td>189.10<\/td>\n<td>190.90<\/td>\n<td>187.70<\/td>\n<td>192.30<\/td>\n<td>185.40<\/td>\n<td>194.60<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">200<\/td>\n<td>199.10<\/td>\n<td>200.90<\/td>\n<td>197.70<\/td>\n<td>202.30<\/td>\n<td>195.40<\/td>\n<td>204.60<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">220<\/td>\n<td>219.10<\/td>\n<td>220.90<\/td>\n<td>217.70<\/td>\n<td>222.30<\/td>\n<td>215.40<\/td>\n<td>224.60<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">240<\/td>\n<td>239.10<\/td>\n<td>240.90<\/td>\n<td>237.70<\/td>\n<td>242.30<\/td>\n<td>235.40<\/td>\n<td>244.60<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">260<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>257.40<\/td>\n<td>262.60<\/td>\n<td>254.80<\/td>\n<td>265.20<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">280<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>277.40<\/td>\n<td>282.60<\/td>\n<td>274.80<\/td>\n<td>285.20<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">300<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>297.40<\/td>\n<td>302.60<\/td>\n<td>294.80<\/td>\n<td>305.20<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">320<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>317.15<\/td>\n<td>322.85<\/td>\n<td>314.30<\/td>\n<td>325.70<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">340<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>337.15<\/td>\n<td>342.85<\/td>\n<td>334.30<\/td>\n<td>345.70<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">360<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>357.15<\/td>\n<td>362.85<\/td>\n<td>354.30<\/td>\n<td>365.70<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">380<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>377.15<\/td>\n<td>382.85<\/td>\n<td>374.30<\/td>\n<td>385.70<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">400<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>397.15<\/td>\n<td>402.85<\/td>\n<td>394.30<\/td>\n<td>405.70<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">420<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>416.85<\/td>\n<td>423.15<\/td>\n<td>413.70<\/td>\n<td>426.30<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">440<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>436.85<\/td>\n<td>443.15<\/td>\n<td>433.70<\/td>\n<td>446.30<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">460<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>456.85<\/td>\n<td>463.15<\/td>\n<td>453.70<\/td>\n<td>466.30<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">480<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>476.85<\/td>\n<td>483.15<\/td>\n<td>473.70<\/td>\n<td>486.30<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">500<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>496.85<\/td>\n<td>503.15<\/td>\n<td>493.70<\/td>\n<td>506.30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Seleccione las longitudes en funci\u00f3n de los requisitos de la aplicaci\u00f3n, priorizando los valores sin par\u00e9ntesis para una estandarizaci\u00f3n \u00f3ptima.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Est\u00e1ndares de longitud de rosca<\/h2>\n<p style=\"margin: 10px 0;\">Las longitudes de rosca (b) para pernos, tornillos y esp\u00e1rragos se especifican en las normas ISO 888:2012 y GB\/T 3106-2016, y representan la parte roscada de los elementos de fijaci\u00f3n con rosca parcial. La tabla siguiente proporciona valores para di\u00e1metros nominales (d) de 1,6 mm a 160 mm, clasificados por rangos de longitud total (l).<\/p>\n<p style=\"margin: 10px 0;\">Estas normas garantizan un acoplamiento adecuado de la rosca para una fijaci\u00f3n segura, minimizando al mismo tiempo el consumo de material. Para los c\u00e1lculos, utilice f\u00f3rmulas cuando no se indiquen los valores de la tabla y considere el roscado completo si el v\u00e1stago sin rosca es \u2264 0,5d.<\/p>\n<div class=\"table-wrapper\" style=\"overflow-x: auto; margin: 20px 0;\">\n<table style=\"width: 100%; border-collapse: collapse;\">\n<thead>\n<tr>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">Di\u00e1metro nominal d (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">l \u2264 125 (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">125 &lt; l \u2264 200 (mm)<\/th>\n<th style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">l &gt; 200 (mm)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">1.6<\/td>\n<td>9<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2<\/td>\n<td>10<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">2.5<\/td>\n<td>11<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">3<\/td>\n<td>12<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">4<\/td>\n<td>14<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">5<\/td>\n<td>16<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">6<\/td>\n<td>18<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">8<\/td>\n<td>22<\/td>\n<td>28<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">10<\/td>\n<td>26<\/td>\n<td>32<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">12<\/td>\n<td>30<\/td>\n<td>36<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">(14)<\/td>\n<td>34<\/td>\n<td>40<\/td>\n<td>–<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">16<\/td>\n<td>38<\/td>\n<td>44<\/td>\n<td>57<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">18<\/td>\n<td>42<\/td>\n<td>48<\/td>\n<td>61<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">20<\/td>\n<td>46<\/td>\n<td>52<\/td>\n<td>65<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">22<\/td>\n<td>50<\/td>\n<td>56<\/td>\n<td>69<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">24<\/td>\n<td>54<\/td>\n<td>60<\/td>\n<td>73<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">27<\/td>\n<td>60<\/td>\n<td>66<\/td>\n<td>79<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">30<\/td>\n<td>66<\/td>\n<td>72<\/td>\n<td>85<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">33<\/td>\n<td>72<\/td>\n<td>78<\/td>\n<td>91<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">36<\/td>\n<td>78<\/td>\n<td>84<\/td>\n<td>97<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">39<\/td>\n<td>84<\/td>\n<td>90<\/td>\n<td>103<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">42<\/td>\n<td>90<\/td>\n<td>96<\/td>\n<td>109<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">45<\/td>\n<td>96<\/td>\n<td>102<\/td>\n<td>115<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">48<\/td>\n<td>102<\/td>\n<td>108<\/td>\n<td>121<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">52<\/td>\n<td>–<\/td>\n<td>116<\/td>\n<td>129<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">56<\/td>\n<td>–<\/td>\n<td>124<\/td>\n<td>137<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">60<\/td>\n<td>–<\/td>\n<td>132<\/td>\n<td>145<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">64<\/td>\n<td>–<\/td>\n<td>140<\/td>\n<td>153<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">68<\/td>\n<td>–<\/td>\n<td>148<\/td>\n<td>161<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">72<\/td>\n<td>–<\/td>\n<td>156<\/td>\n<td>169<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">76<\/td>\n<td>–<\/td>\n<td>164<\/td>\n<td>177<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">80<\/td>\n<td>–<\/td>\n<td>172<\/td>\n<td>185<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">85<\/td>\n<td>–<\/td>\n<td>182<\/td>\n<td>195<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">90<\/td>\n<td>–<\/td>\n<td>192<\/td>\n<td>205<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">95<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>215<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">100<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>225<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">105<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>235<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">110<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>245<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">115<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>255<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">120<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>265<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">125<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>275<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">130<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>285<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">140<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>305<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">150<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>325<\/td>\n<\/tr>\n<tr>\n<td style=\"border: 1px solid #ddd; padding: 8px; text-align: left;\">160<\/td>\n<td>–<\/td>\n<td>–<\/td>\n<td>345<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<p style=\"margin: 10px 0;\">Utilice estos valores para determinar el acoplamiento de la rosca, garantizando as\u00ed la seguridad y la eficiencia en el dise\u00f1o.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Notas clave y c\u00e1lculos<\/h2>\n<p style=\"margin: 10px 0;\">Entre las consideraciones esenciales para la aplicaci\u00f3n de estas normas se incluyen:<\/p>\n<ul style=\"margin: 10px 0 10px 20px;\">\n<li>Calcule la longitud de la rosca b a menos que se especifique lo contrario: Para l \u2264 125 mm, b = 2d + 6 mm; para 125 mm  200 mm, b = 2d + 25 mm.<\/li>\n<li>Si el v\u00e1stago sin rosca es \u2264 0,5d, fabricar como totalmente roscado.<\/li>\n<li>Tolerancias para la longitud de rosca b seg\u00fan ISO 4759-1: Para tornillos y esp\u00e1rragos ranurados o empotrados, +2P \/ 0 (donde P es el paso).<\/li>\n<li>Para una mejor estandarizaci\u00f3n, evite usar longitudes nominales entre par\u00e9ntesis.<\/li>\n<li>Estas normas se aplican a las roscas m\u00e9tricas ISO seg\u00fan la norma ISO 68-1.<\/li>\n<\/ul>\n<p style=\"margin: 10px 0;\">Estas notas sirven de gu\u00eda para una fabricaci\u00f3n y selecci\u00f3n precisas, mejorando la fiabilidad de los conjuntos mec\u00e1nicos.<\/p>\n<\/div>\n<div style=\"margin-bottom: 40px;\">\n<h2 style=\"color: #444; border-bottom: 1px solid #ddd; padding-bottom: 10px;\">Preguntas frecuentes (FAQ)<\/h2>\n<ol style=\"margin: 10px 0 10px 20px;\">\n<li><strong>\u00bfCu\u00e1l es el prop\u00f3sito de estandarizar las longitudes nominales?<\/strong><br \/>\nLa estandarizaci\u00f3n garantiza la intercambiabilidad, simplifica el dise\u00f1o y optimiza la producci\u00f3n, reduciendo los costes y los errores de montaje.<\/li>\n<li><strong>\u00bfEn qu\u00e9 se diferencian las tolerancias de los grados de producto A, B y C?<\/strong><br \/>\nEl grado A tiene las tolerancias m\u00e1s estrictas en cuanto a precisi\u00f3n; el grado B ofrece una exactitud equilibrada; el grado C es m\u00e1s permisivo para aplicaciones donde el costo es un factor importante.<\/li>\n<li><strong>\u00bfCu\u00e1ndo deben utilizarse fijaciones totalmente roscadas?<\/strong><br \/>\nSi los c\u00e1lculos arrojan un v\u00e1stago sin rosca de \u2264 0,5d, opte por el roscado completo para mantener la resistencia y la simplicidad.<\/li>\n<li><strong>\u00bfPor qu\u00e9 evitar las longitudes entre par\u00e9ntesis?<\/strong><br \/>\nSon preferencias secundarias; priorizar las longitudes sin par\u00e9ntesis fomenta la coherencia y la disponibilidad.<\/li>\n<li><strong>\u00bfC\u00f3mo calcular la longitud de la rosca para tama\u00f1os no tabulados?<\/strong><br \/>\nUtilice las f\u00f3rmulas: b = 2d + 6 mm (l \u2264 125 mm), b = 2d + 12 mm (125  200 mm).<\/li>\n<li><strong>\u00bfQu\u00e9 tolerancias se aplican a las longitudes de rosca?<\/strong><br \/>\nSeg\u00fan la norma ISO 4759-1, para tornillos y esp\u00e1rragos con accionamiento, las tolerancias garantizan un agarre adecuado; para los tipos ranurados, +2P \/ 0.<\/li>\n<\/ol>\n<\/div>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Article Outline This guide details standards for nominal lengths and thread lengths of bolts, screws, and studs, based on ISO 888:2012 and related tolerances from ISO 4759-1. The structure is as follows: Introduction to Length Standards Nominal Length Standards Thread Length Standards Key Notes and Calculations Frequently Asked Questions (FAQ) Introduction to Length Standards Standards [&hellip;]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[220],"tags":[],"class_list":["post-5727","post","type-post","status-publish","format-standard","hentry","category-technical-documentation-and-references"],"_links":{"self":[{"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/posts\/5727","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/comments?post=5727"}],"version-history":[{"count":2,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/posts\/5727\/revisions"}],"predecessor-version":[{"id":5729,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/posts\/5727\/revisions\/5729"}],"wp:attachment":[{"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/media?parent=5727"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/categories?post=5727"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/korea-transmission.com\/es\/wp-json\/wp\/v2\/tags?post=5727"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}