Loading... > 机上设备上的螺纹非我锁紧螺纹和传动螺纹,先来分享一下锁紧螺纹内我个人比较懵的**英制螺纹** > 先说一下我的懵点(老师傅们采用的不是标准,采用的是约定成俗的习俗.而每个区域货行业的习俗可能都不相同,所以不具有宽泛>性.): > > 1. 老师傅们口中的说的英制螺纹一般是国内比较常见的英制55度但有可能美制60度的. > 2. 好了确定完英制55度后,老师傅们说的G螺纹有可能是说的是用的比较多的PT ZG或者RC > 3. 从RC引申出了新老国标的问题,公称直径 DN20、6分、3/4 我是懵的一圈? 好了牢骚完了说正题吧!归纳一下吧,个人从标准手册归纳总结.非官方. ## 英制螺纹尺寸对照表 ### 英制螺纹标准规格表 55° ( 密封用圆锥管螺纹 1:16 ) | in英寸 | N牙数 | P螺距 | D大径 | D1小径 | DN公称 | H牙高 | 装备余量 | 有效长度 | 基准距离 | | --- | --- | --- |--- | --- | --- |--- | --- | --- |--- | --- | --- | ZG1/16" | 28 | 0.907 | 7.723 | 6.561 | 未知 | 0.581 | 2.5 | 6.5 | 4.0 | ZG1/8" | 28 | 0.907 | 9.728 | 8.566 | 6 | 0.581 | 2.5 | 6.5 | 4.0 | ZG1/4" | 19 | 1.337 | 13.157| 11.445|8 |0.856 | 3.7 | 9.7 | 6.0 | ZG3/8" | 19 | 1.337 | 16.662| 14.95 |10 |0.856 | 3.7 |10.1 | 6.4 | ZG1/2" | 14 | 1.814 | 20.955| 18.631|15 |1.162 | 5.0 |13.2 | 8.2 | ZG3/4" |14 |1.814 |26.441 | 24.117|20 |1.162 | 5.0 |14.5 | 9.5 | ZG1" |11 |2.309 |33.249 |30.291 |25 |1.479 |6.4 |16.8 |10.4 | ZG1-1/4"| 11 |2.309 |41.91 |38.952 |32 |1.479 |6.4 |19.1 | 12.7 | ZG1-1/2"| 11 |2.309 |47.803 |44.845 |40 |1.479 |6.4 |19.1 |12.7 | ZG2" | 11 |2.309 |59.614 |56.656 |50 |1.479 |7.5 |23.4 |15.9 | ZG2-1/2"| 11 |2.309 |75.184 |72.226 |65 |1.479 |9.2 |26.7 |17.5 | ZG3" | 11 |2.309 |87.884 |84.926 |80 |1.479 |9.2 |29.8 |20.6 | ZG4" |11 |2.309 |113.03 |110.072|100|1.479 |10.4|35.8 |25.4 | ZG5" |11 |2.309 |138.43 |135.472|125|1.479 |11.5|40.1 |28.6 | ZG6" | 11 |2.309 |163.83 |160.872|150|1.479 |11.5| 40.1 |28.6 | > 注:1英寸in =25.4mm 引用GB/T7306.1、7306.2-2000 GB/T7306.1/7306.2-2000整理 ### 英制螺纹标准规格表 55° ( 非密封 ) | in英寸 | N牙数 | P螺距 | D大径 | D1小径 | | --- | --- | --- |--- | --- | G1/16"|28|0.907|7.723|6.561 G1/8"|28|0.907|9.728|8.566 G1/4"|19|1.337|13.157|11.445 G3/8"|19|1.337|16.662|14.95 G1/2"|14|1.814|20.955|18.631 G5/8"|14|1.814|22.911|20.587 G3/4"|14|1.814|26.441|24.117 G7/8"|14|1.814|30.201|27.877 G1"|11|2.309|33.249|30.291 G1-1/8"|11|2.309|37.897|34.939 G1-1/4"|11|2.309|41.91|38.952 G1-1/2"|11|2.309|47.803|44.845 G1-3/4"|11|2.309|53.746|50.788 G2"|11|2.309|59.614|56.656 G2-1/4"|11|2.309|65.71|62.752 G2-1/2"|11|2.309|75.184|72.226 G2-3/4"|11|2.309|81.534|78.578 G3"|11|2.309|87.884|84.926 G3-1/2"|11|2.309|100.33|97.372 G4"|11|2.309|113.03|110.072 G5"|11|2.309|138.43|135.472 G6"|11|2.309|163.83|160.872 注:1英寸in =25.4mm 引用GB/T 7307-2001整理 ### ISO 60度 公制螺纹标准规格表 | 规格 | 标准底孔 | 2级max | 2级min | | --- | --- | --- |--- | M1.0×0.2 | 0.8 | 0.821 | 0.783 M1.1×0.2|0.9|0.921|0.883 M1.2×0.2|1|1.021|0.983 M1.4×0.2|1.2|1.221|1.183 M1.6×0.2|1.4|1.421|1.383 M1.7×0.2|1.45|1.5|1.46 M1.8×0.2|1.6|1.621|1.583 M2.0×0.25|1.75|1.785|1.729 M2.2×0.25|1.95|1.985|1.929 M2.3×0.25|2.05|2.061|2.001 M2.5×0.35|2.2|2.221|2.121 M2.6×0.35|2.2|2.246|2.186 M3.0×0.35|2.7|2.721|2.621 M3.5×0.35|3.2|3.221|0.121 M4.0×0.50|3.5|3.599|3.459 M4.5×0.5|4|4.099|3.959 M5.0×0.5|4.5|4.599|4.459 M5.5×0.5|5|5.099|4.959 M6.0×0.5|5.5|5.55|5.4 M6.0×0.75|5.3|5.378|5.188 M7.0×0.5|6.5|6.55|6.4 M7.0×0.75|6.3|6.378|6.188 M8.0×0.50|7.5|7.52|7.4 M8.0×0.75|7.3|7.378|7.188 M8.0×1.0|7|7.153|6.917 M9.0×0.75|8.3|8.378|8.188 M9.0×1.0|8|8.153|7.917 M10×0.5|9.5|9.52|9.4 M10×0.75|9.3|9.378|9.188 M10×1.0|9|9.153|8.917 M10×1.25|8.8|8.312|8.647 M11×0.75|10.3|10.378|10.188 M11×1.0|10|10.153|9.917 M12×1.25|10.8|10.912|10.647 M12×1.5|10.5|10.576|10.376 M18×2.5|15.5|15.744|15.294 M20×2.5|17.5|17.744|17.294 M22×2.5|19.5|19.744|19.294 M24×3.0|21|21.252|20.752 M27×1.0|26|26.153|25.917 M27×1.5|25.5|25.676|24.376 M27×2.0|25|25.21|24.835 M27×3.0|24|24.252|23.752 M28×1.0|27|27.153|26.917 M28×1.5|26.5|26.676|26.376 M28×2.0|26|26.21|25.835 M30×1.0|29|29.153|28.917 M30×1.5|28.5|28.676|28.376 M30×3.0|27|27.252|26.752 M30×3.5|26.5|26.771|26.211 M32×1.5|30.5|30.676|30.376 M32×2.0|30|30.21|29.835 M33×1.5|31.5|31.676|31.376 M33×2.0|31|31.21|30.835 M33×3.0|30|30.252|29.752 M35×1.5|33.5|33.676|33.376 M36×1.5|34.5|34.676|34.376 M36×2.0|34|34.21|33.835 M36×3.0|33|33.252|32.752 我去markdown果然不适合表格,累的手疼. Last modification:October 19, 2020 © Allow specification reprint Support Appreciate the author WeChat Like 4 如果觉得我的文章对你有用,请帮忙点一下上面的广告