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Single End Countersinks - 387 - Super Savings! Save up to 40%


Super Savings! Up to 40% off on Single End Countersinks at In The National Interest. Top brands include Drill America, Ultra Tool, KEO Cutters, & Morse Cutting Tools. Hurry! Limited time offers. Offers valid only while supplies last.



Drill America DEWSFC Series High-Speed Steel Countersink, 1 Flute, 1/2'' Shank Diameter, 7/8'' Size, 120 Degrees Angle (Pack of 1)
Drill America DEWSFC Series High-Speed Steel Countersink, 1 Flute, 1/2" Shank Diameter, 7/8" Size, 120 Degrees Angle (Pack of 1)
In Stock
$28.67
$25.24
You Save: 12%

mpn: DEWSFC7/8-120, ean: 0887861131049,

Drill America DEWSFC Series single flute countersink is ideal for chambering, deburring, and countersinking. It is provide a smooth finish on a variety of materials. High-speed steel tools are good for most general purpose applications, offering a co...


Ultra Tool 910 Series Solid Carbide Single-End Countersink, Uncoated (Bright) Finish, 6 Flutes, 90 Degrees, 3/8'' Shank Dia., 3/4'' Body Dia.
Ultra Tool 910 Series Solid Carbide Single-End Countersink, Uncoated (Bright) Finish, 6 Flutes, 90 Degrees, 3/8" Shank Dia., 3/4" Body Dia.
In Stock
$45.36

mpn: 91840,

The Ultra Tool 910 series solid carbide single-end countersink with an uncoated (bright) finish creates a 90-degree conical opening that accepts a flat-head fastener so it sits flush with the surface. The six flutes provide a smooth finish on hardene...


KEO 53528 Cobalt Steel Single-End Countersink Set, Uncoated (Bright) Finish, 90 Degree Angle, 5/16'' - 5/8'' Head Diameter
KEO 53528 Cobalt Steel Single-End Countersink Set, Uncoated (Bright) Finish, 90 Degree Angle, 5/16" - 5/8" Head Diameter
In Stock
$62.50
$62.49

mpn: 53528,

Flute countersink and deburring tools. Straight shank, CNC precision cam ground, M35 cobalt steel material, chatter-free cutting action. Made in Great Britain. Set includes 90 degree 5/16", 3/8", 1/2", 5/8" head diameter countersink. Cobalt steel too...


Morse Cutting Tools 56120 Carbide Single Flute Countersinks, Solid Carbide, Bright Finish, 120 degree Split Point, 1/8'' Size
Morse Cutting Tools 56120 Carbide Single Flute Countersinks, Solid Carbide, Bright Finish, 120 degree Split Point, 1/8" Size
In Stock
$17.99
$12.78
You Save: 29%

mpn: 56120, ean: 0686125561208,

For countersinking and deburring holes.List No. 5752. Single Flute Countersink. Carbide. ...


Drill America DEWCSK Series High-Speed Steel Center Reamer Countersink, 3 Flute, 3/8'' Shank Diameter, 5/8'' Size, 100 Degrees Angle (Pack of 1)
Drill America DEWCSK Series High-Speed Steel Center Reamer Countersink, 3 Flute, 3/8" Shank Diameter, 5/8" Size, 100 Degrees Angle (Pack of 1)
In Stock
$14.51
$13.00
You Save: 10%

mpn: DEWCSK5/8-100, ean: 0887861131506,

Drill America DEWCSK Series 3 flute countersink is designed for countersinking holes for centers or for enlarge existing holes. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness fo...


KEO 55816 Solid Carbide Single-End Countersink, Uncoated (Bright) Finish, 6 Flutes, 100 Degree Point Angle, Round Shank, 1/4'' Shank Diameter, 3/8'' Body Diameter
KEO 55816 Solid Carbide Single-End Countersink, Uncoated (Bright) Finish, 6 Flutes, 100 Degree Point Angle, Round Shank, 1/4" Shank Diameter, 3/8" Body Diameter
In Stock
$28.90
$27.99
You Save: 3%

mpn: 55816,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


Drill America DEWSFC Series High-Speed Steel Countersink, 1 Flute, 1/4'' Shank Diameter, 1/2'' Size, 82 Degrees Angle (Pack of 1)
Drill America DEWSFC Series High-Speed Steel Countersink, 1 Flute, 1/4" Shank Diameter, 1/2" Size, 82 Degrees Angle (Pack of 1)
In Stock
$12.39
$12.32

mpn: DEWSFC1/2-82, ean: 0887861130820,

Drill America DEWSFC Series single flute countersink is ideal for chambering, deburring, and countersinking. It is provide a smooth finish on a variety of materials. High-speed steel tools are good for most general purpose applications, offering a co...


KEO 53514 Cobalt Steel Single-End Countersink, TiN Coated, 82 Degree Point Angle, Round Shank, 3/8'' Shank Diameter, 3/4'' Body Diameter
KEO 53514 Cobalt Steel Single-End Countersink, TiN Coated, 82 Degree Point Angle, Round Shank, 3/8" Shank Diameter, 3/4" Body Diameter
In Stock
$40.10
$35.09
You Save: 12%

mpn: 53514-TiN,

KEO ZErO flute countersink and deburring tools are simple, all-purpose tools made of Cobalt that provide flawless countersinking and deburring. The chatter-free cutting action requires minimal power. The microsmooth CNC precision ground construction ...


KEO 53514 Cobalt Steel Single-End Countersink, Uncoated (Bright) Finish, 82 Degree Point Angle, Round Shank, 3/8'' Shank Diameter, 3/4'' Body Diameter
KEO 53514 Cobalt Steel Single-End Countersink, Uncoated (Bright) Finish, 82 Degree Point Angle, Round Shank, 3/8" Shank Diameter, 3/4" Body Diameter
In Stock
$42.44
$30.39
You Save: 28%

mpn: 53514,

KEO ZErO flute countersink and deburring tools are simple, all-purpose tools made of Cobalt that provide flawless countersinking and deburring. The chatter-free cutting action requires minimal power. The microsmooth CNC precision ground construction ...


KEO 53513 Cobalt Steel Single-End Countersink, Uncoated (Bright) Finish, 82 Degree Point Angle, Round Shank, 3/8 Shank Diameter, 5/8 Body Diameter
KEO 53513 Cobalt Steel Single-End Countersink, Uncoated (Bright) Finish, 82 Degree Point Angle, Round Shank, 3/8 Shank Diameter, 5/8 Body Diameter
In Stock
$23.56

mpn: 53513,

KEO ZErO flute countersink and deburring tools are simple, all-purpose tools made of Cobalt that provide flawless countersinking and deburring. The chatter-free cutting action requires minimal power. The microsmooth CNC precision ground construction ...


KEO 55516 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 60 Degree Point Angle, Round Shank, 1'' Shank Diameter, 2-1/2'' Body Diameter
KEO 55516 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 60 Degree Point Angle, Round Shank, 1" Shank Diameter, 2-1/2" Body Diameter
In Stock
$681.54
$607.87
You Save: 11%

mpn: 55516-TiN,

4.6 out of 5 stars with 19 reviews
KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55557 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 1'' Shank Diameter, 3'' Body Diameter
KEO 55557 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 1" Shank Diameter, 3" Body Diameter
In Stock
$909.05

mpn: 55557-TiN,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55779 Solid Carbide Single-End Countersink Set, TiALN Coated, 3 Flutes, 100 Degree Point Angle, 1/4'' - 1'' Body Diameter
KEO 55779 Solid Carbide Single-End Countersink Set, TiALN Coated, 3 Flutes, 100 Degree Point Angle, 1/4" - 1" Body Diameter
In Stock
$532.37

mpn: 55779-TiALN,

For the carbide family of these tools, the three-flute represents the ideal "general purpose" countersink. They have enough chip clearance in the three-flute design for a variety of ferrous and non-ferrous materials, while providing enough strength w...


KEO 55810 Solid Carbide Single-End Countersink, TiALN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 3/4'' Shank Diameter, 1-1/4'' Body Diameter
KEO 55810 Solid Carbide Single-End Countersink, TiALN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 3/4" Shank Diameter, 1-1/4" Body Diameter
In Stock
$529.14

mpn: 55810-TiALN,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55536 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 82 Degree Point Angle, Round Shank, 1'' Shank Diameter, 2-1/2'' Body Diameter
KEO 55536 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 82 Degree Point Angle, Round Shank, 1" Shank Diameter, 2-1/2" Body Diameter
In Stock
$786.63
$475.00
You Save: 40%

mpn: 55536-TiN,

4.0 out of 5 stars with 21 reviews
KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55537 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 82 Degree Point Angle, Round Shank, 1'' Shank Diameter, 3'' Body Diameter
KEO 55537 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 82 Degree Point Angle, Round Shank, 1" Shank Diameter, 3" Body Diameter
In Stock
$631.58

mpn: 55537-TiN,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55556 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 1'' Shank Diameter, 2-1/2'' Body Diameter
KEO 55556 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 90 Degree Point Angle, Round Shank, 1" Shank Diameter, 2-1/2" Body Diameter
In Stock
$695.06
$452.73
You Save: 35%

mpn: 55556-TiN,

4.6 out of 5 stars with 18 reviews
KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55577 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 100 Degree Point Angle, Round Shank, 1'' Shank Diameter, 3'' Body Diameter
KEO 55577 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 100 Degree Point Angle, Round Shank, 1" Shank Diameter, 3" Body Diameter
In Stock
$560.62
$532.59
You Save: 5%

mpn: 55577-TiN,

4.2 out of 5 stars with 33 reviews
KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55617 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 120 Degree Point Angle, Round Shank, 1'' Shank Diameter, 3'' Body Diameter
KEO 55617 Cobalt Steel Single-End Countersink, TiN Coated, 6 Flutes, 120 Degree Point Angle, Round Shank, 1" Shank Diameter, 3" Body Diameter
In Stock
$631.58

mpn: 55617-TiN,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...


KEO 55789 Solid Carbide Single-End Countersink, TiALN Coated, 6 Flutes, 60 Degree Point Angle, Round Shank, 3/4'' Shank Diameter, 1-1/2'' Body Diameter
KEO 55789 Solid Carbide Single-End Countersink, TiALN Coated, 6 Flutes, 60 Degree Point Angle, Round Shank, 3/4" Shank Diameter, 1-1/2" Body Diameter
In Stock
$621.15
$606.34
You Save: 2%

mpn: 55789-TiALN,

KEO 6-flute line of countersinks are companions to our single flute countersinks and our 3- and 4-flute center reamer line. As a rule, the more edges per revolution, the greater amount of material that may be removed. We have designed the 6-flute too...



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