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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 7/16"
Flute Length 3.543
Length 5.5"
Overall Length 5.5
Quantity 6 (bulk)
Shank Diameter 0.4375
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CO4155

Other sizes

Diameter

1/16"

Overall Length

1.875

Shank Diameter

0.0625

Quantity

1 (carded)

*Note

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

Diameter

5/64"

Overall Length

2

Shank Diameter

0.0781

Quantity

1 (carded)

*Note

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

Diameter

3/32"

Overall Length

2.25

Shank Diameter

0.0937

Quantity

1 (carded)

*Note

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

Diameter

7/64"

Overall Length

2.625

Shank Diameter

0.109298

Quantity

1 (carded)

*Note

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

Diameter

1/8"

Overall Length

2.75

Shank Diameter

0.125

Quantity

1 (carded)

*Note

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

Diameter

9/64"

Overall Length

2.875

Shank Diameter

0.1406

Quantity

1 (carded)

*Note

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

Diameter

5/32"

Overall Length

3.125

Shank Diameter

0.15625

Quantity

1 (carded)

*Note

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

Diameter

11/64"

Overall Length

3.25

Shank Diameter

0.1718

Quantity

1 (carded)

*Note

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

Diameter

13/64"

Overall Length

3.625

Shank Diameter

0.2031

Quantity

1 (carded)

*Note

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

Diameter

15/64"

Overall Length

3.875

Shank Diameter

0.2343

Quantity

1 (carded)

*Note

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

Diameter

11/32"

Overall Length

4.75

Shank Diameter

0.3437

Quantity

1 (carded)

*Note

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

Diameter

23/64"

Overall Length

4.875

Shank Diameter

0.3593

Quantity

1 (carded)

*Note

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

Diameter

3/8"

Overall Length

5

Shank Diameter

0.375

Quantity

1 (carded)

*Note

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

Diameter

25/64"

Overall Length

5.125

Shank Diameter

0.3906

Quantity

1 (carded)

*Note

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

Diameter

13/32"

Overall Length

5.25

Shank Diameter

0.4062

Quantity

1 (carded)

*Note

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

Diameter

27/64"

Overall Length

5.375

Shank Diameter

0.4218

Quantity

1 (carded)

*Note

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

Diameter

7/16"

Overall Length

5.5

Shank Diameter

0.4375

Quantity

1 (carded)

*Note

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

Diameter

15/32"

Overall Length

5.75

Shank Diameter

0.4687

Quantity

1 (carded)

*Note

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

Diameter

31/64"

Overall Length

5.875

Shank Diameter

0.4843

Quantity

1 (carded)

*Note

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

Diameter

1/2"

Overall Length

6

Shank Diameter

0.5

Quantity

1 (carded)

*Note

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

Diameter

1/64"

Overall Length

0.75

Shank Diameter

0.0156

Quantity

12 (bulk)

*Note

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

Diameter

3/64"

Overall Length

1.75

Shank Diameter

0.0468

Quantity

12 (bulk)

*Note

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

Diameter

1/16"

Overall Length

1.875

Shank Diameter

0.0625

Quantity

12 (bulk)

*Note

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

Diameter

5/64"

Overall Length

2

Shank Diameter

0.0781

Quantity

12 (bulk)

*Note

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

Diameter

3/32"

Overall Length

2.25

Shank Diameter

0.0937

Quantity

12 (bulk)

*Note

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

Diameter

7/64"

Overall Length

2.625

Shank Diameter

0.109298

Quantity

12 (bulk)

*Note

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

Diameter

1/8"

Overall Length

2.75

Shank Diameter

0.125

Quantity

12 (bulk)

*Note

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

Diameter

9/64"

Overall Length

2.875

Shank Diameter

0.1406

Quantity

12 (bulk)

*Note

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

Diameter

5/32"

Overall Length

3.125

Shank Diameter

0.15625

Quantity

12 (bulk)

*Note

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

Diameter

11/64"

Overall Length

3.25

Shank Diameter

0.1718

Quantity

12 (bulk)

*Note

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

Diameter

13/64"

Overall Length

3.365

Shank Diameter

0.2031

Quantity

12 (bulk)

*Note

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

Diameter

7/32"

Overall Length

3.75

Shank Diameter

0.2187

Quantity

12 (bulk)

*Note

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

Diameter

15/64"

Overall Length

3.875

Shank Diameter

0.2343

Quantity

12 (bulk)

*Note

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

Diameter

1/4"

Overall Length

4

Shank Diameter

0.25

Quantity

12 (bulk)

*Note

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

Diameter

17/64"

Overall Length

4.125

Shank Diameter

0.2656

Quantity

1 (carded)

*Note

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

Diameter

9/32"

Overall Length

4.25

Shank Diameter

0.2812

Quantity

1 (carded)

*Note

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

Diameter

19/64"

Overall Length

4.375

Shank Diameter

0.2968

Quantity

1 (carded)

*Note

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

Diameter

5/16"

Overall Length

4.5

Shank Diameter

0.3125

Quantity

1 (carded)

*Note

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

Diameter

21/64"

Overall Length

4.625

Shank Diameter

0.3281

Quantity

1 (carded)

*Note

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

Diameter

9/32"

Overall Length

4.25

Shank Diameter

0.2812

Quantity

6 (bulk)

*Note

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

Diameter

19/64"

Overall Length

4.375

Shank Diameter

0.2968

Quantity

6 (bulk)

*Note

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

Diameter

5/16"

Overall Length

4.5

Shank Diameter

0.3125

Quantity

6 (bulk)

*Note

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

Diameter

21/64"

Overall Length

4.625

Shank Diameter

0.3281

Quantity

6 (bulk)

*Note

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

Diameter

11/32"

Overall Length

4.75

Shank Diameter

0.3437

Quantity

6 (bulk)

*Note

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

Diameter

23/64"

Overall Length

4.875

Shank Diameter

0.3593

Quantity

6 (bulk)

*Note

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

Diameter

25/64"

Overall Length

5.125

Shank Diameter

0.3906

Quantity

6 (bulk)

*Note

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

Diameter

27/64"

Overall Length

5.375

Shank Diameter

0.4218

Quantity

6 (bulk)

*Note

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

Diameter

29/64"

Overall Length

5.625

Shank Diameter

0.4531

Quantity

6 (bulk)

*Note

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

Diameter

15/32"

Overall Length

5.75

Shank Diameter

0.4687

Quantity

6 (bulk)

*Note

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

Diameter

31/64"

Overall Length

5.875

Shank Diameter

0.4843

Quantity

6 (bulk)

*Note

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

Diameter

1/2"

Overall Length

6

Shank Diameter

0.5

Quantity

6 (bulk)

*Note

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

Diameter

17/64"

Overall Length

4.125

Shank Diameter

0.2656

Quantity

6 (bulk)

*Note

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

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