#4 Jobber Length Drill Bit | Cobalt | D/ACO4 (12 / Pkg.)
Roll over image to zoom in Click on image to zoom
#4 Jobber Length Drill Bit | Cobalt | D/ACO4 (12 / Pkg.)

Image may not reflect complete product dimensions and specifications. Please call to confirm any questions.

#4 Jobber Length Drill Bit | Cobalt | D/ACO4 (12 / Pkg.)

Drill AmericaSKU: D/ACO4
Price:
$39.86per 12( $3.32 each)
Pieces 12
Measurement type Inch
Diameter #4
Length 3-3/4
Material Cobalt
Finish Gold
Flute length 2-1/2
Point type Split Point
Shank Round
Size #4
Weight 1.0 lb

WARNING: This product can expose you to chemicals including lead and lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to https://www.P65Warnings.ca.gov.

Description

Specs

  • Product: [12 PKG] #4 Cobalt Jobber Length Drill Bit, D/ACO Series
  • Diameter: #4
  • Length: Jobber length
  • Material: Cobalt alloy
  • Packaging: 12 bits per package
  • Series: D/ACO

Features

  • High heat and wear resistance from cobalt alloy, enabling longer bit life in hard metals such as stainless steel and alloy steel.
  • Jobber-length design provides extended reach and rigidity for through-holes and deeper pockets compared to shorter drill styles.
  • 12-pack offers ready-to-use quantity for repetitive drilling tasks in metalworking and fabrication workflows.
  • Part of the D/ACO Series, indicating a specialized geometry family tailored for demanding metal drilling scenarios.
  • Efficient chip evacuation and stable performance under higher torque when paired with proper feeds and lubrication.
  • Ideal for machinists, fabricators, and hobbyists working with tough metals requiring precise, repeatable hole sizes.

Physical

  • Diameter: #4
  • Length: Jobber length
  • Series: D/ACO
  • Quantity: 12 bits per package
  • Material: Cobalt alloy

Can We Help?

If you’re not sure that this product is right for you, give us a call!
800-222-0324

Recently viewed