| 摘要 |
A fastener (10) being pressable into a metal sheet in a way safe against rotation and pressing out having a head (12), the side of which after insertion facing the metal sheet is having radially positioned ridges (22), which, when setting the fastener (10), are pressed into the metal sheet, wherein a cylindrical thread-carrier (14) is positioned in the centre of said ridges (22) projecting through the metal sheet beyond the other side of the metal sheet and which in the vicinity of the side of the head (12) facing the metal sheet in the set state is having a surrounding annular recess (20) into which the material of the metal sheet displaced during the setting can be pressed.
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