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？

youdao

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。

youdao

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。

youdao

Andrew Hodd played some Tillakaratne Dilshan-style scoops over his head, particularly brave as he had been hit flush on the Sussex martlets badge on his helmet by a wayward Smith beamer whilst keeping wicket.

BBC: Sussex well beaten in first game