A valve boring fitting for attaching to a pipe, the valve boring fitting comprising: a housing which exhibits a main portion with a head region and a pipe assembly region and also a branch portion for a medium leaving the bored pipe; a housing cover which can be screwed onto the housing by means of a screw thread arranged on the head region of the housing; a valve body with a cutting tool, wherein the valve body is arranged in the main portion of the housing in a displaceable manner in the axial direction, wherein the housing cover has a force-transmitting element, by means of which the housing cover can be coupled to the valve body and the valve body is displaceable by means of the housing cover, wherein the force-transmitting element is configured as a pin arranged centrally in the housing cover, which projects from the housing cover into the inside of the housing, wherein a bore is formed in the valve body which corresponds to the pin, wherein the pin has at least one driver pin on the side thereof facing away from the housing cover, wherein in the bore in the valve body at least one receiving groove is formed extending in the axial direction of the bore and running over the length of the bore, in which receiving groove the driver pin is axially displaceable, characterized in that at least one T-shaped groove is formed in the bore in the valve body, which groove has an insertion region running in the axial direction and a locking region running in the circumferential direction and adjoining the insertion region, wherein the driver pin is introduced into the insertion region through axial insertion and axially secured through subsequent rotation of the pin, wherein the receiving groove is arranged offset at an angle to the T-shaped groove. a housing which exhibits a main portion with a head region and a pipe assembly region and also a branch portion for a medium leaving the bored pipe; a housing cover which can be screwed onto the housing by means of a screw thread arranged on the head region of the housing; a valve body with a cutting tool, wherein the valve body is arranged in the main portion of the housing in a displaceable manner in the axial direction, wherein the housing cover has a force-transmitting element, by means of which the housing cover can be coupled to the valve body and the valve body is displaceable by means of the housing cover, wherein the force-transmitting element is configured as a pin arranged centrally in the housing cover, which projects from the housing cover into the inside of the housing, wherein a bore is formed in the valve body which corresponds to the pin, wherein the pin has at least one driver pin on the side thereof facing away from the housing cover, wherein in the bore in the valve body at least one receiving groove is formed extending in the axial direction of the bore and running over the length of the bore, in which receiving groove the driver pin is axially displaceable, characterized in that at least one T-shaped groove is formed in the bore in the valve body, which groove has an insertion region running in the axial direction and a locking region running in the circumferential direction and adjoining the insertion region, wherein the driver pin is introduced into the insertion region through axial insertion and axially secured through subsequent rotation of the pin, wherein the receiving groove is arranged offset at an angle to the T-shaped groove.