Bosch 5/16-in x 4-1/2-in Jobber Drill Bit, Black Oxide, Bulk
Bosch BL4147
SKU BPT-BL4147
Bosch's 5/16-in x 4-1/2-in black oxide coated fractional jobber drill bits are equipped with a speed helix design that increases speed, as well a split point that starts on contact with no walking or skating. Shop more drill bits at HomElectrical today!
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Bosch's 5/16-in x 4-1/2-in black oxide coated fractional jobber drill bits are equipped with a speed helix design that increases speed, as well a split point that starts on contact with no walking or skating. Shop more drill bits at HomElectrical today!
- Bulk Pack.
- Diameter: 5/16 Inch.
- Overall Length: 4-1/2 Inch.
- Shank: 5/16 Inch.
- Speed helix design for three times faster drilling than standard bits.
- Last 50% longer than high-speed steel.
- Easier drilling, reduced heat and extended drill bit life.
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
Similar Drill Bit Products
Bosch BL4147 Description
- Bulk Pack.
- Diameter: 5/16 Inch.
- Overall Length: 4-1/2 Inch.
- Shank: 5/16 Inch.
- Speed helix design for three times faster drilling than standard bits.
- Last 50% longer than high-speed steel.
- Easier drilling, reduced heat and extended drill bit life.
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
Similar Drill Bit Products
Free Shipping Eligible
$4.08Each
Sold by the Case of 6 for only $24.48
Ships between 02/02/2026 - 02/16/2026
Product Specifications
| Part Number | BL4147 |
| Weight | 0.06-lb |
| UPC | 000346328820 |
Manufacturer Description
5/16-in BLACK OXIDE SP JOBBER (BULK)
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
Bosch's 5/16-in x 4-1/2-in black oxide coated fractional jobber drill bits are equipped with a speed helix design that increases speed, as well a split point that starts on contact with no walking or skating. Shop more drill bits at HomElectrical today!
Free Shipping Eligible
$4.08Each
Sold by the Case of 6 for only $24.48
Ships between 02/02/2026 - 02/16/2026
Similar Drill Bit Products
Bosch BL4147 Description
- Bulk Pack.
- Diameter: 5/16 Inch.
- Overall Length: 4-1/2 Inch.
- Shank: 5/16 Inch.
- Speed helix design for three times faster drilling than standard bits.
- Last 50% longer than high-speed steel.
- Easier drilling, reduced heat and extended drill bit life.
- For use in steel, copper, aluminum, brass, oak, maple, MDF, pine, PVC, polycarbonate, acrylic, ABS, nylon and composite materials.
Product Specifications
| Part Number | BL4147 |
| Weight | 0.06-lb |
| UPC | 000346328820 |
Manufacturer Description
5/16-in BLACK OXIDE SP JOBBER (BULK)
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
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