Four Flute Countersinks

Designed for use in all woods, plastics, and non- ferrous metals. The countersink is held in place with 2 hex socket set screws fastened into the flutes of the drill. This countersink can be mounted on taper point, brad point, and regular point drills.

Part Number

Cutting Diameter

Drill Hole Size

Overall Length

ADV-ADV-C2

1/4

5/64

3/4

ADV-ADV-C3

1/4

3/32

3/4

ADV-C4

5/16

7/64

7/8

ADV-C44

5/16

1/8

7/8

ADV-C65

5/16

9/64

7/8

ADV-C410

5/16

5/32

7/8

ADV-C411

5/16

11/64

7/8

ADV-C43

5/16

3/16

7/8

ADV-C56

3/8

3/32

7/8

ADV-C57

3/8

7/64

7/8

* ADV-C5

3/8

1/8

7/8

* ADV-C6

3/8

9/64

7/8

* ADV-C7

3/8

5/32

7/8

* ADV-C8

3/8

11/64

7/8

* ADV-C9

3/8

3/16

7/8

ADV-C913

3/8

13/64

7/8

ADV-C97

3/8

7/32

7/8

ADV-C105

7/16

5/32

7/8

ADV-C1011

7/16

11/64

7/8

ADV-C103

7/16

3/16

7/8

* ADV-C10

7/16

13/64

7/8

ADV-C1014

7/16

7/32

7/8

ADV-C104

7/16

1/4

7/8

ADV-C122

1/2

1/8

7/8

ADV-C129

1/2

9/64

7/8

ADV-C125

1/2

5/32

7/8

ADV-C1211

1/2

11/64

7/8

* ADV-C92

1/2

3/16

7/8

* ADV-C102

1/2

13/64

7/8

* ADV-C12

1/2

7/32

7/8

ADV-C1415

1/2

15/64

7/8

* ADV-C14

1/2

1/4

7/8

ADV-C145

5/8

5/32

1-1/16

* ADV-C143

5/8

3/16

1-1/16

ADV-C167

5/8

7/32

1-1/16

* ADV-C16

5/8

1/4

1-1/16

ADV-C1617

5/8

17/64

1-1/16

* ADV-C169

5/8

9/32

1-1/16

ADV-C1619

5/8

19/64

1-1/16

* ADV-C18

5/8

5/16

1-1/16

ADV-C243

3/4

3/16

1-1/8

ADV-C247

3/4

7/32

1-1/8

ADV-C244

3/4

1/4

1-1/8

ADV-C245

3/4

5/16

1-1/8

ADV-C20

3/4

21/64

1-1/8

ADV-C24

3/4

3/8

1-1/4

ADV-C284

7/8

1/4

1-1/4

ADV-C285

7/8

5/16

1-1/4

ADV-C286

7/8

3/8

1-1/4

ADV-C287

7/8

7/16

1-3/8

ADV-C324

1

1/4

1-3/8

ADV-C326

1

3/8

1-3/8

ADV-C328

1

1/2

1-1/2

* Indicates most popular sizes contained in sets.

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