TOOLS [ AND MACHINES AND PARTS THEREOF ] FOR USE IN SCREW CONNECTIONS; NAMELY, SCREW-THREAD-TAPPING TOOLS, [ COILING MACHINES FOR WIRE THREAD INSERTS, ] TOOLS FOR INSERTING AND EXTRACTING WIRE THREAD BUSHINGS, STAKING TOOLS FOR SECURING THREAD BUSHINGS IN BOSS MEMBERS, REAMERS [ , STUD DRIVERS ] AND EXTRACTORS