ROTARY TYPE TOOLS FOR INSTALLING SELF-TAPPING THREADED INSERTS HAVING EXTERNAL THREADS ADAPTED TO BE SCREWED INTO AN INITIALLY UNTHREADED BORE IN A CARRIER PART AND TO TAP THREADS IN THE WALL OF SAID BORE AS THE INSERT IS SCREWED INTO POSITION, WITH THE INSERT HAVING ALSO AN ADDITIONAL SET OF THREADS TO WHICH A COACTING ELEMENT IS CONNECTIBLE TO SECURE SAID ELEMENT TO THE CARRIER PART THROUGH THE MEDIUM OF THE INSERT, SAID TOOLS BEING SPECIFICALLY ADAPTED TO ROTATE SUCH A SELF-TAPPING THREADE...

Self-Tapping Threaded Inserts Having External Threads Adapted to Be Screwed into an Initially Unthreaded Bore in a Carrier Part and to Tap Threads in the Wall of Said Bore as the Insert Is Screwed into Position, with the Insert Having Also an Additional Set of Threads to which a Coacting Element Is Connectible to Secure Said Element to the Carrier Part Through the Medium of the Insert