四方槽沉头螺钉 [Table 2] (ASTM F837, F468) ASME B 18.6.3 (T2-III) - 2013
| 选择规格尺寸 点击↓ 2# 3# 4# 5# 6# 8# 10# 12# 1/4 5/16 3/8 |
尺寸单位:
inch |
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![ASME B 18.6.3 (T2-III) - 2013 四方槽沉头螺钉 [Table 2] (ASTM F837, F468)](https://img.164580.com/upload/48/pic_cadpara/460_zh.png?ue=1732456487&local=cache&tp=canvas&pict=png)
![美标ASME B18.6.3 (T2-III) - 2013 ASME18.6. 四方槽沉头螺钉 [Table 2] (ASTM F837, F468)](https://img.164580.com/upload/48/pic/2023/12/07/1701939524711725180.jpg)
![ASME B 18.6.3 (T2-III) - 2013 四方槽沉头螺钉 [Table 2] (ASTM F837, F468)](https://img.164580.com/upload/48/qrcode_standardurl/5102.png)
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| ①,头部边缘为倒圆或平的。 ②,小于等于长度L的螺钉，为清根沉头型。 ③,机械螺钉材料 1)非热处理低碳钢，如1006~1022 硬度HRB69-100 2)当机械螺钉规定硬度时，应采用中低碳钢制造，如含硼或不含硼1018~1038 硬度HRC25-38 ④,机械螺钉的螺纹长度： 1）螺纹规格≤5#: 公称长度≤3倍公称直径的应为满扣产品，头下螺纹肩距≤1倍螺距。 公称长度＞3倍公称直径到 1-1/8 in 的，允许头下肩距最大不超过2倍螺距。 若无其他规定，长螺钉的最小螺纹长度为1 in 。 2）螺纹规格≥6#: 公称长度≤3倍公称直径的应为满扣产品，头下螺纹肩距≤1倍螺距。 公称长度＞3倍公称直径到 2 in 的，允许头下螺纹肩距最大不超过2倍螺距。 若无其他规定，长螺钉的最小螺纹长度为 1.5 in 。 ⑤,R代表正常插入深度，S代表短（浅）插入深度 |
采用标准
自攻螺纹
| 1 |
![AB型和ABR型自攻螺纹和末端 [Table 40]](http://img.164580.com/upload/48/standard/2018/09/28/1538121933855296516.jpg)
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[美标] ASME/ANSI B 18.6.3 (T40) - 2013 |
AB型和ABR型自攻螺纹和末端 [Table 40] Dimensions of Threads and Points for Type AB and Type ABR Thread-forming Screws |
| 2 |
![B型 BP型自攻螺钉螺纹和末端 [Table 41]](http://img.164580.com/upload/48/standard/2018/09/29/1538186661945324758.jpg)
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[美标] ASME/ANSI B 18.6.3 (T41) - 2013 |
B型 BP型自攻螺钉螺纹和末端 [Table 41] Dimensions of Threads and Points for Type B and BP Thread-Forming Tapping Screws |
| 3 |
![A型自攻螺钉螺纹和末端 [Table 42]](http://img.164580.com/upload/48/standard/2018/09/29/1538199242541614227.jpg)
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[美标] ASME/ANSI B 18.6.3 (T42) - 2013 |
A型自攻螺钉螺纹和末端 [Table 42] Dimensions of Threads and Points for Type A Thread-Forming Tapping Screws |
| 4 |
![BF型 BT型 自切自攻螺钉螺纹和末端 [Table 43]](http://img.164580.com/upload/48/standard/2018/09/29/1538208543197073992.jpg)
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[美标] ASME/ANSI B 18.6.3 (T43) - 2013 |
BF型 BT型 自切自攻螺钉螺纹和末端 [Table 43] Dimensions of Threads and Points for Types BF and BT Thread-Cutting Tapping Screws |
| 5 |
![D, F, G, T 型自攻螺钉 螺纹和末端 [Table 44]](http://img.164580.com/upload/48/standard/2018/09/30/1538274982710145766.jpg)
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[美标] ASME/ANSI B 18.6.3 (T44) - 2013 |
D, F, G, T 型自攻螺钉 螺纹和末端 [Table 44] Dimensions of Threads and Points for Type D, F, G, and T Thread-Cutting Tapping Screws |
| 6 |
![自挤自攻【TRS型】螺纹和末端 [Table 45]](http://img.164580.com/upload/48/standard/2018/10/08/1538974825207969765.jpg)
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[美标] ASME/ANSI B 18.6.3 (T45) - 2013 |
自挤自攻【TRS型】螺纹和末端 [Table 45] Dimensions of Type TRS Tapping Screws |
注：技术数据仅供参考，请以官方原件为准！
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