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Power Tools for Professionals

12 pc. 7/16 In. x 5-1/2 In. Cobalt Drill Bit

CO4155

Bosch cobalt drill bits are specially designed for drilling in hard steel. Thick web helix delivers fast material removal combined with increased durability for maximum efficiency and performance. Each bit is manufactured to exacting specifications and features a split point that starts on contact with no walking or skating, eliminating the need for a center punch.

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Benefits

Technical Data

Specifications
*Note 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger
Bulk false
Diameter inch 7/16"
Flute Length in 3.543
Length in 5.5"
Overall Length in 5.5
Pack Quantity 6
Shank Diameter in 0.4375
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CO4155

Other sizes

Diameter inch

1/16"

Overall Length in

1.875

Shank Diameter in

0.0625

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/64"

Overall Length in

2

Shank Diameter in

0.0781

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

3/32"

Overall Length in

2.25

Shank Diameter in

0.0937

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

7/64"

Overall Length in

2.625

Shank Diameter in

0.109298

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/8"

Overall Length in

2.75

Shank Diameter in

0.125

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

9/64"

Overall Length in

2.875

Shank Diameter in

0.1406

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/32"

Overall Length in

3.125

Shank Diameter in

0.15625

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

11/64"

Overall Length in

3.25

Shank Diameter in

0.1718

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

13/64"

Overall Length in

3.625

Shank Diameter in

0.2031

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

15/64"

Overall Length in

3.875

Shank Diameter in

0.2343

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

11/32"

Overall Length in

4.75

Shank Diameter in

0.3437

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

23/64"

Overall Length in

4.875

Shank Diameter in

0.3593

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

3/8"

Overall Length in

5

Shank Diameter in

0.375

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

25/64"

Overall Length in

5.125

Shank Diameter in

0.3906

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

13/32"

Overall Length in

5.25

Shank Diameter in

0.4062

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

27/64"

Overall Length in

5.375

Shank Diameter in

0.4218

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

7/16"

Overall Length in

5.5

Shank Diameter in

0.4375

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

15/32"

Overall Length in

5.75

Shank Diameter in

0.4687

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

31/64"

Overall Length in

5.875

Shank Diameter in

0.4843

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/2"

Overall Length in

6

Shank Diameter in

0.5

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/64"

Overall Length in

0.75

Shank Diameter in

0.0156

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

3/64"

Overall Length in

1.75

Shank Diameter in

0.0468

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/16"

Overall Length in

1.875

Shank Diameter in

0.0625

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/64"

Overall Length in

2

Shank Diameter in

0.0781

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

3/32"

Overall Length in

2.25

Shank Diameter in

0.0937

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

7/64"

Overall Length in

2.625

Shank Diameter in

0.109298

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/8"

Overall Length in

2.75

Shank Diameter in

0.125

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

9/64"

Overall Length in

2.875

Shank Diameter in

0.1406

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/32"

Overall Length in

3.125

Shank Diameter in

0.15625

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

11/64"

Overall Length in

3.25

Shank Diameter in

0.1718

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

13/64"

Overall Length in

3.365

Shank Diameter in

0.2031

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

7/32"

Overall Length in

3.75

Shank Diameter in

0.2187

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

15/64"

Overall Length in

3.875

Shank Diameter in

0.2343

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/4"

Overall Length in

4

Shank Diameter in

0.25

Pack Quantity

12

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

17/64"

Overall Length in

4.125

Shank Diameter in

0.2656

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

9/32"

Overall Length in

4.25

Shank Diameter in

0.2812

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

19/64"

Overall Length in

4.375

Shank Diameter in

0.2968

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/16"

Overall Length in

4.5

Shank Diameter in

0.3125

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

21/64"

Overall Length in

4.625

Shank Diameter in

0.3281

Pack Quantity

1

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

9/32"

Overall Length in

4.25

Shank Diameter in

0.2812

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

19/64"

Overall Length in

4.375

Shank Diameter in

0.2968

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

5/16"

Overall Length in

4.5

Shank Diameter in

0.3125

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

21/64"

Overall Length in

4.625

Shank Diameter in

0.3281

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

11/32"

Overall Length in

4.75

Shank Diameter in

0.3437

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

23/64"

Overall Length in

4.875

Shank Diameter in

0.3593

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

25/64"

Overall Length in

5.125

Shank Diameter in

0.3906

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

27/64"

Overall Length in

5.375

Shank Diameter in

0.4218

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

29/64"

Overall Length in

5.625

Shank Diameter in

0.4531

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

15/32"

Overall Length in

5.75

Shank Diameter in

0.4687

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

31/64"

Overall Length in

5.875

Shank Diameter in

0.4843

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

1/2"

Overall Length in

6

Shank Diameter in

0.5

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

Diameter inch

17/64"

Overall Length in

4.125

Shank Diameter in

0.2656

Pack Quantity

6

*Note

1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger

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