Abstract: Punch pins which have further extending lobes, and which are designed to punch sockets that have deeper flutes while not having lobes which extend further toward a center axis of the fastener. Using such a punch pin to form a socket in a fastener provides that the resulting socket has flutes which are deeper than they otherwise would be, without having to provide corresponding lobes which extend further toward the center axis of the socket. This extra deepness in the flutes helps to provide extra room for a coating to deposit.

Abstract: Punch pins which have further extending lobes, and which are designed to punch sockets that have deeper flutes while not having lobes which extend further toward a center axis of the fastener. Using such a punch pin to form a socket in a fastener provides that the resulting socket has flutes which are deeper than they otherwise would be, without having to provide corresponding lobes which extend further toward the center axis of the socket. This extra deepness in the flutes helps to provide extra room for a coating to deposit.

Abstract: A self-punching fastener (10), which in a way safe against rotation and pressing out can be pressed into a metal sheet member (40) having an annular body, the side of which facing the metal sheet is having radially disposed projections (15, 25), which, during the pressing-in, are pressed into the metal sheet member (40) and thereby are securing the fastener (10) against rotation, wherein in the centre an interior thread (11) is positioned and, wherein on the side facing the metal sheet member (40) in the set state there is provided an annular depression (12) into which the material displaced during the setting is pressed.

Abstract: A self-punching fastener (10), which in a way safe against rotation and pressing out can be pressed into a metal sheet member (40) having an annular body, the side of which facing the metal sheet is having radially disposed projections (15, 25), which, during the pressing-in, are pressed into the metal sheet member (40) and thereby are securing the fastener (10) against rotation, wherein in the centre an interior thread (11) is positioned and, wherein on the side facing the metal sheet member (40) in the set state there is provided an annular depression (12) into which the material displaced during the setting is pressed.

Abstract: 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.

Abstract: A self-punching fastener (10), which in a way is safe against rotation and pressing out and which can be pressed into a metal sheet member (40) having an annular body, the side of which facing the metal sheet has radially disposed projections (15, 25), which, during the pressing-in, are pressed into the metal sheet member (40) and thereby secure the fastener (10) against rotation, wherein in the center an interior thread (11) is positioned and, wherein on the side facing the metal sheet member (40) in the set state there is provided an annular depression (12) into which the material displaced during the setting is pressed.

Abstract: 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.

Abstract: A self-punching fastener (10), which in a way safe against rotation and pressing out can be pressed into a metal sheet member (40) having an annular body, the side of which facing the metal sheet is having radially disposed projections (15, 25), which, during the pressing-in, are pressed into the metal sheet member (40) and thereby are securing the fastener (10) against rotation, wherein in the centre an interior thread (11) is positioned and, wherein on the side facing the metal sheet member (40) in the set state there is provided an annular depression (12) into which the material displaced during the setting is pressed.

Abstract: 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 center 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.