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  - 12" Overall Length
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      - 3/4" General Purpose
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60 Degree 6 Flute Chatterless Countersinks

60 Degree
Single Flute Countersinks should be used when multi-flute Countersinks chatter or the hole is too small for a multi-flute Countersinks to enter. 60 degree Countersinks are used for centering. 82 degree Countersinks are used for Countersinks flathead screws. 90 degree Countersinks are used for chamfering and deburring. 100 degree Countersinks are used to make screw and rivet holes. Center Reamers are designed for Countersinks holes for flathead screws, and rivets, in portable drilling applications. Four Flute Machine Countersinks have a longer shank to use in Turret lathes and for screw machine work. Six Flute Chatterless Countersinks are designed for fast shearing cuts. Packaging: All sizes are individually packaged.