Four Flute Countersink FOUR FLUTE MACHINE COUNTERSINK Single Flute Countersinks should be used when multi-flute countersinks chatter or the hole is too small for a multi-flute countersink to enter. 60 degree Countersinks are used for centering. 82 degree Countersinks are used for countersinking 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 countersinking 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. Four Flute Countersink   C4F50542 - 1/2 " Four Flute Machine Countersink, HSS, 82° Ang 1/2 " Four Flute Machine Countersink, HSS, 82° Angle Price: $ 21.48 C4F50542A - 1/2" Four Flute Machine Countersink, HSS, 60° Angl 1/2" Four Flute Machine Countersink, HSS, 60° Angle Price: $ 22.02 C4F50542B - 1/2" Four Flute Machine Countersink, HSS, 90° Angl 1/2" Four Flute Machine Countersink, HSS, 90° Angle Price: $ 22.02 C4F50543 - 5/8" Four Flute Machine Countersink, HSS, 82° Angl 5/8" Four Flute Machine Countersink, HSS, 82° Angle Price: $ 27.47 C4F50543A - 5/8" Four Flute Machine Countersink, HSS, 60° Angl 5/8" Four Flute Machine Countersink, HSS, 60° Angle Price: $ 27.47 C4F50543B - 5/8" Four Flute Machine Countersink, HSS, 90° Angl 5/8" Four Flute Machine Countersink, HSS, 90° Angle Price: $ 27.47 C4F50544 - 3/4" Four Flute Machine Countersink, HSS, 82° Angl 3/4" Four Flute Machine Countersink, HSS, 82° Angle Price: $ 36.23 C4F50544A - 3/4" Four Flute Machine Countersink, HSS, 60° Angl 3/4" Four Flute Machine Countersink, HSS, 60° Angle Price: $ 36.23 C4F50544B - 3/4" Four Flute Machine Countersink, HSS, 90° Angl 3/4" Four Flute Machine Countersink, HSS, 90° Angle Price: $ 36.23 C4F50545 - 7/8" Four Flute Machine Countersink, HSS, 82° Angl 7/8" Four Flute Machine Countersink, HSS, 82° Angle Price: $ 39.85 C4F50545A - 7/8" Four Flute Machine Countersink, HSS, 60° Angl 7/8" Four Flute Machine Countersink, HSS, 60° Angle Price: $ 39.85 C4F50545B - 7/8" Four Flute Machine Countersink, HSS, 90° Angl 7/8" Four Flute Machine Countersink, HSS, 90° Angle Price: $ 39.85 C4F50546 - 1" Four Flute Machine Countersink, HSS, 82° Angle 1" Four Flute Machine Countersink, HSS, 82° Angle Price: $ 45.58 C4F50546A - 1" Four Flute Machine Countersink, HSS, 60° Angle 1" Four Flute Machine Countersink, HSS, 60° Angle Price: $ 45.58 C4F50546B - 1" Four Flute Machine Countersink, HSS, 90° Angle 1" Four Flute Machine Countersink, HSS, 90° Angle Price: $ 45.58 15 Items Found in Four Flute Countersink