Cobalt Drill Bits

Cobalt Drill Bits

Cobalt Extension Aircraft Drills
Cobalt Extension Aircraft Drills
Cobalt Jobber Length Drills
Cobalt Jobber Length Drills
Cobalt Screw Machine Drills Stub Length
Cobalt Screw Machine Drills Stub Length

Cobalt drill bits are a go-to choice for drilling stainless steel, titanium, and other tough alloys where standard HSS wears out too quickly but full carbide isn't necessary or practical. We stock Cobalt Jobber Length Drills, Cobalt Screw Machine (Stub) Length Drills, and Cobalt Extension Aircraft Drills for reaching into deeper holes.

Cobalt's added heat resistance over standard HSS helps it maintain a sharper edge at the higher temperatures generated when drilling harder materials. All Cobalt drill bits are USA manufactured and stocked for same-day shipping.

  • Compare SKU Vendor Size (D1) Shank Diameter (D2) Flute Length (L2) Overall Length (L1) Shank Style Point Angle Number of Flutes Morse Taper Included Angle (A) Package Qty Coating In Stock Price Quantity
    A58622 ACT #41 2-3/8 2-3/8 135° 2 12 ALTiN 12
    $3.83
  • A58507 ACT #41 13/16 1-13/16 135° 2 12 ALTiN 50
    $3.55
  • A46468 ACT #42 1-1/4 2-1/4 135° 2 12 Straw Finish 100
    $2.27
  • A45690 ACT #42 3/4 1-3/4 135° 2 12 Straw Finish 100
    $1.94
  • A58623 ACT #42 2-1/4 2-1/4 135° 2 12 ALTiN 24
    $3.83
  • A58508 ACT #42 3/4 1-3/4 135° 2 12 ALTiN 100
    $3.55
  • A46469 ACT #43 1-1/4 2-1/4 135° 2 12 Straw Finish 100
    $2.27
  • A45691 ACT #43 3/4 1-3/4 135° 2 12 Straw Finish 100
    $1.94
  • A58624 ACT #43 2-1/4 2-1/4 135° 2 12 ALTiN 26
    $3.83
  • A58509 ACT #43 3/4 1-3/4 135° 2 12 ALTiN 38
    $3.55
  • A46470 ACT #44 1-1/8 2-1/8 135° 2 12 Straw Finish 100
    $2.27
  • A45692 ACT #44 3/4 1-3/4 135° 2 12 Straw Finish 100
    $1.94
  • A58625 ACT #44 2-1/8 2-1/8 135° 2 12 ALTiN 50
    $3.83
  • A58510 ACT #44 3/4 1-3/4 135° 2 12 ALTiN 50
    $3.55
  • A46471 ACT #45 1-1/8 2-1/8 135° 2 12 Straw Finish 100
    $2.27
  • A45693 ACT #45 3/4 1-3/4 135° 2 12 Straw Finish 100
    $1.94
  • A58626 ACT #45 2-1/8 2-1/8 135° 2 12 ALTiN 26
    $3.83
  • A58511 ACT #45 3/4 1-3/4 135° 2 12 ALTiN 26
    $3.55
  • A46472 ACT #46 1-1/8 2-1/8 135° 2 12 Straw Finish 100
    $2.27
  • A45694 ACT #46 3/4 1-3/4 135° 2 12 Straw Finish 100
    $1.94
  • A58627 ACT #46 2-1/8 2-1/8 135° 2 12 ALTiN 100
    $3.83
  • A58512 ACT #46 3/4 1-3/4 135° 2 12 ALTiN 26
    $3.55
  • A46473 ACT #47 1 2 135° 2 12 Straw Finish 100
    $2.27
  • A45695 ACT #47 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58628 ACT #47 2 2 135° 2 12 ALTiN 38
    $3.83
  • A58513 ACT #47 11/16 1-11/16 135° 2 12 ALTiN 62
    $3.55
  • A46474 ACT #48 1 2 135° 2 12 Straw Finish 100
    $2.27
  • A45696 ACT #48 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58629 ACT #48 2 2 135° 2 12 ALTiN 86
    $3.83
  • A58514 ACT #48 11/16 1-11/16 135° 2 12 ALTiN 24
    $3.55
  • A46475 ACT #49 1 2 135° 2 12 Straw Finish 100
    $2.27
  • A45697 ACT #49 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58630 ACT #49 2 2 135° 2 12 ALTiN 62
    $3.83
  • A58515 ACT #49 11/16 1-11/16 135° 2 12 ALTiN 26
    $3.55
  • A46476 ACT #50 1 2 135° 2 12 Straw Finish 100
    $2.27
  • A45698 ACT #50 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58631 ACT #50 2 2 135° 2 12 ALTiN 26
    $3.83
  • A58516 ACT #50 11/16 1-11/16 135° 2 12 ALTiN 86
    $3.55
  • A46477 ACT #51 1 2 135° 2 12 Straw Finish 100
    $2.27
  • A45699 ACT #51 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58632 ACT #51 2 2 135° 2 12 ALTiN 100
    $3.83
  • A58517 ACT #51 11/16 1-11/16 135° 2 12 ALTiN 100
    $3.55
  • A46478 ACT #52 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.27
  • A45700 ACT #52 11/16 1-11/16 135° 2 12 Straw Finish 100
    $1.94
  • A58633 ACT #52 1-7/8 1-7/8 135° 2 12 ALTiN 100
    $3.83
  • A58518 ACT #52 11/16 1-11/16 135° 2 12 ALTiN 86
    $3.55
  • A46479 ACT #53 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.43
  • A45701 ACT #53 5/8 1-5/8 135° 2 12 Straw Finish 100
    $2.27
  • A58634 ACT #53 1-7/8 1-7/8 135° 2 12 ALTiN 74
    $4.16
  • A58519 ACT #53 5/8 1-5/8 135° 2 12 ALTiN 24
    $3.75
  • A46480 ACT #54 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.43
  • A45702 ACT #54 5/8 1-5/8 135° 2 12 Straw Finish 74
    $2.27
  • A58635 ACT #54 1-7/8 1-7/8 135° 2 12 ALTiN 12
    $4.16
  • A58520 ACT #54 5/8 1-5/8 135° 2 12 ALTiN 26
    $3.75
  • A46481 ACT #55 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.43
  • A45703 ACT #55 5/8 1-5/8 135° 2 12 Straw Finish 100
    $2.27
  • A58636 ACT #55 1-7/8 1-7/8 135° 2 12 ALTiN 86
    $4.16
  • A58521 ACT #55 5/8 1-5/8 135° 2 12 ALTiN 26
    $3.75
  • A46482 ACT #56 3/4 1-3/4 135° 2 12 Straw Finish 100
    $2.63
  • A45704 ACT #56 1/2 1-3/8 135° 2 12 Straw Finish 100
    $2.27
  • A58637 ACT #56 1-3/4 1-3/4 135° 2 12 ALTiN 100
    $4.62
  • A58522 ACT #56 1/2 1-3/8 135° 2 12 ALTiN 100
    $3.75
  • A46483 ACT #57 3/4 1-3/4 135° 2 12 Straw Finish 100
    $2.63
  • A45705 ACT #57 1/2 1-3/8 135° 2 12 Straw Finish 86
    $2.27
  • A58638 ACT #57 1-3/4 1-3/4 135° 2 12 ALTiN 50
    $4.62
  • A58523 ACT #57 1/2 1-3/8 135° 2 12 ALTiN 24
    $3.75
  • A46484 ACT #58 11/16 1-5/8 135° 2 12 Straw Finish 100
    $2.63
  • A45706 ACT #58 1/2 1-3/8 135° 2 12 Straw Finish 86
    $2.35
  • A58639 ACT #58 1-5/8 1-5/8 135° 2 12 ALTiN 24
    $4.62
  • A58524 ACT #58 1/2 1-3/8 135° 2 12 ALTiN 24
    $6.89
  • A46485 ACT #59 11/16 1-5/8 135° 2 12 Straw Finish 100
    $2.63
  • A45707 ACT #59 1/2 1-3/8 135° 2 12 Straw Finish 62
    $2.35
  • A58640 ACT #59 1-5/8 1-5/8 135° 2 12 ALTiN 62
    $4.62
  • A58525 ACT #59 1/2 1-3/8 135° 2 12 ALTiN 12
    $3.96
  • A46486 ACT #60 11/16 1-5/8 135° 2 12 Straw Finish 100
    $2.63
  • A45708 ACT #60 1/2 1-3/8 135° 2 12 Straw Finish Available to Order*
    $2.35
  • A58641 ACT #60 1-5/8 1-5/8 135° 2 12 ALTiN 100
    $4.62
  • A58526 ACT #60 1/2 1-3/8 135° 2 12 ALTiN 38
    $3.96

* Lead times can vary from 1–10 business days. Call (908) 98-ATLAS or email sales@atlascuttingtools.com for details.

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