钻尾自攻螺丝”又称“钻尾螺丝”“钻尾螺钉”“自钻螺丝”北方人又称为“燕尾螺丝”。
这种螺丝带有钻尾尖,尖部像麻花钻头而得名,在装配时螺钉能自行钻出中心孔子,然后借助于临近的螺纹部分在载体上孔内自攻挤削出与之配合的螺纹,故称为自钻自攻螺丝。参见下面几个图片中的样式。
它的执行标准有国标GB/T 15856.1-2002.德标DIN7504N-1995,日标JIS B 1124-2003.
根据用途和形状还可以分为以下几个类别:
1)十字槽盘头自钻自攻螺钉
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/37d12f2eb9389b50c664247d8f35e5dde7116e02?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
2)十字槽沉头自钻自攻螺钉
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/7e3e6709c93d70cff8f26d22f2dcd100baa12b91?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
3)十字槽半沉头自钻自攻螺钉,跟上面沉头螺丝接近。
4)六角法兰面自钻自攻螺钉
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/060828381f30e924a7de5b1e46086e061d95f7a3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
5)六角凸缘自钻
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/6f061d950a7b02085db3f8ce68d9f2d3572cc8a3?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
自攻螺钉根据材质可分为:钢材1022A,不锈铁410,不锈钢304