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12 pc. 3/16 In. x 2-5/16 In. Fractional Double-End Black Oxide Bits
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BL6139
The Bosch line of metal drill bits offers a solution for every professional application. 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. Bosch black oxide bits offer superior durability, speed and selection to support most general-purpose applications.
Benefits
Speed helix design for three times faster drilling than standard bits
Available in jobber length, stubby length, extended length (aircraft), 1/2 In. reduced shank (Silver and Deming)
Last 50% longer than high-speed steel
For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials
Easier drilling, reduced heat and extended drill bit life
Technical Data
| *Note | All 135° points |
| Bulk | false |
| Diameter inch | 3/16" |
| Flute Length in | 0.5 |
| Length in | 2.3125" |
| Overall Length in | 2.3125 |
| Pack Quantity | 12 |
| Shank Diameter in | 0.1875 |
BL6139
BL6139
BL6134
BL6135
BL6136
BL6137
BL6141
BL6143
Other sizes
BL6134
Diameter inch
7/64"
Shank Diameter in
0.109298
Overall Length in
1.9375
Pack Quantity
12
*Note
All 135° points
BL6135
Diameter inch
1/8"
Shank Diameter in
0.125
Overall Length in
2.125
Pack Quantity
12
*Note
All 135° points
BL6136
Diameter inch
9/64"
Shank Diameter in
0.1406
Overall Length in
2.1562
Pack Quantity
12
*Note
All 135° points
BL6137
Diameter inch
5/32"
Shank Diameter in
0.15625
Overall Length in
2.1562
Pack Quantity
12
*Note
All 135° points
BL6141
Diameter inch
7/32"
Shank Diameter in
0.2187
Overall Length in
2.3125
Pack Quantity
12
*Note
All 135° points
BL6143
Diameter inch
1/4"
Shank Diameter in
0.25
Overall Length in
2.3125
Pack Quantity
12
*Note
All 135° points