What standard, flush head type bolt offers the largest diameter head?

是哪个标准的螺栓其冲出的头型极大于头部直径？

When you fall in love your cheeks flush, your heart beats faster and your head starts spinning... but you are as happy as one can be.

当你坠入爱河，你的脸颊潮红，你的心跳加快，你的头开始旋转…但你是最幸福快乐的。

The utility model relates to a new shearing butt welder, which is a mechanical device for flush shearing and welding the tail steel part of a previous coil and the head steel part of a latter coil.

本实用新型所述的一种新型剪切对焊机，是一种用于把前一卷带钢尾部和后一卷带钢头部剪齐并焊接在一起的机械设备。

EGE pressure controllers feature a flush aluminum ceramic gauge head and are thus suitable for monitoring pressures and fill levels of even polluted and viscous media.

荟英压力控制器采用了冲洗铝陶瓷表头，因此监测的压力，并填写甚至粘稠程度和污染媒体适合。