Call our Service Hotline or use our contact form.
1-877-BOSCH99 (1-877-267-2499)
Mon-Fri: 7:00-19:00 CST
CO4134
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.
*Note | 1/64” – 7/64”: 118° point; 1/8” and larger; 135° point; three flat shank 3/16” and larger |
Bulk | false |
Diameter inch | 7/64" |
Flute Length in | 1.497 |
Length in | 2.625" |
Overall Length in | 2.625 |
Pack Quantity | 12 |
Shank Diameter in | 0.109298 |
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
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
7/16"
Overall Length in
5.5
Shank Diameter in
0.4375
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