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
    A78158 ACT #17 2-3/16 3-3/8 135° 2 1 Gold Oxide 74
    $5.99
  • A58599 ACT #18 3-1/4 3-1/4 135° 2 12 ALTiN 24
    $5.89
  • A58484 ACT #18 1-1/16 2-1/8 135° 2 12 ALTiN Available to Order*
    $5.24
  • A78157 ACT #16 2-3/16 3-3/8 135° 2 1 Gold Oxide 24
    $6.22
  • A46445 ACT #19 2-1/8 3-1/4 135° 2 12 Straw Finish 100
    $3.22
  • A46415 ACT 21/64 3-5/16 4-5/8 135° 2 6 Straw Finish 100
    $8.95
  • A45667 ACT #19 1-1/16 2-1/8 135° 2 12 Straw Finish 100
    $2.81
  • A45638 ACT 11/32 1-11/16 3 135° 2 6 Straw Finish 100
    $8.74
  • A78156 ACT #15 2-3/16 3-3/8 135° 2 1 Gold Oxide 74
    $6.85
  • A58600 ACT #19 3-1/4 3-1/4 135° 2 12 ALTiN 24
    $5.73
  • A58485 ACT #19 1-1/16 2-1/8 135° 2 12 ALTiN 62
    $4.99
  • A78155 ACT #14 2-3/16 3-3/8 135° 2 1 Gold Oxide 26
    $6.85
  • A46446 ACT #20 2-1/8 3-1/4 135° 2 12 Straw Finish 100
    $3.22
  • A45668 ACT #20 1-1/16 2-1/8 135° 2 12 Straw Finish 100
    $2.81
  • A78154 ACT #13 2-5/16 3-1/2 135° 2 1 Gold Oxide 26
    $6.85
  • A58601 ACT #20 3-1/4 3-1/4 135° 2 12 ALTiN 100
    $5.73
  • A58486 ACT #20 1-1/16 2-1/8 135° 2 12 ALTiN 24
    $4.99
  • A78153 ACT #12 2-5/16 3-1/2 135° 2 1 Gold Oxide 38
    $6.93
  • A46447 ACT #21 2-1/8 3-1/4 135° 2 12 Straw Finish 100
    $3.22
  • A45669 ACT #21 1-1/16 2-1/8 135° 2 12 Straw Finish 100
    $2.81
  • A78152 ACT #11 2-5/16 3-1/2 135° 2 1 Gold Oxide 38
    $6.93
  • A58602 ACT #21 3-1/4 3-1/4 135° 2 12 ALTiN 50
    $5.69
  • A58487 ACT #21 1-1/16 2-1/8 135° 2 12 ALTiN 100
    $4.99
  • A78151 ACT #10 2-7/16 3-5/8 135° 2 1 Gold Oxide 100
    $6.93
  • A46448 ACT #22 2 3-1/8 135° 2 12 Straw Finish 26
    $3.22
  • A45670 ACT #22 1-1/16 2-1/8 135° 2 12 Straw Finish 100
    $2.81
  • A78150 ACT #9 2-7/16 3-5/8 135° 2 1 Gold Oxide 62
    $6.93
  • A58603 ACT #22 3-1/8 3-1/8 135° 2 12 ALTiN 12
    $5.69
  • A58488 ACT #22 1-1/16 2-1/8 135° 2 12 ALTiN 38
    $4.99
  • A78149 ACT #8 2-7/16 3-5/8 135° 2 1 Gold Oxide 38
    $6.93
  • A46449 ACT #23 2 3-1/8 135° 2 12 Straw Finish 50
    $3.22
  • A45671 ACT #23 1 2-1/16 135° 2 12 Straw Finish 100
    $2.81
  • A78148 ACT #7 2-7/16 3-5/8 135° 2 1 Gold Oxide 62
    $6.93
  • A58604 ACT #23 3-1/8 3-1/8 135° 2 12 ALTiN 38
    $5.69
  • A58489 ACT #23 1 2-1/16 135° 2 12 ALTiN 38
    $4.99
  • A78147 ACT #6 2-1/2 3-3/4 135° 2 1 Gold Oxide 26
    $8.82
  • A46450 ACT #24 2 3-1/8 135° 2 12 Straw Finish 100
    $3.22
  • A45672 ACT #24 1 2-1/16 135° 2 12 Straw Finish 100
    $2.81
  • A78146 ACT #5 2-1/2 3-3/4 135° 2 1 Gold Oxide 38
    $8.82
  • A58605 ACT #24 3-1/8 3-1/8 135° 2 12 ALTiN 100
    $5.69
  • A58490 ACT #24 1 2-1/16 135° 2 12 ALTiN 26
    $4.99
  • A78145 ACT #4 2-1/2 3-3/4 135° 2 1 Gold Oxide 38
    $8.82
  • A46451 ACT #25 1-7/8 3 135° 2 12 Straw Finish 100
    $2.97
  • A45673 ACT #25 1 2-1/16 135° 2 12 Straw Finish 100
    $2.63
  • A78144 ACT #3 2-1/2 3-3/4 135° 2 1 Gold Oxide 26
    $8.82
  • A58606 ACT #25 3 3 135° 2 12 ALTiN 74
    $5.24
  • A58491 ACT #25 1 2-1/16 135° 2 12 ALTiN 100
    $4.62
  • A46452 ACT #26 1-7/8 3 135° 2 12 Straw Finish 100
    $2.89
  • A45674 ACT #26 1 2-1/16 135° 2 12 Straw Finish 62
    $2.63
  • A58607 ACT #26 3 3 135° 2 12 ALTiN 12
    $5.20
  • A58492 ACT #26 1 2-1/16 135° 2 12 ALTiN 26
    $4.62
  • A46453 ACT #27 1-7/8 3 135° 2 12 Straw Finish 100
    $2.89
  • A45675 ACT #27 1 2-1/16 135° 2 12 Straw Finish 100
    $2.63
  • A58608 ACT #27 3 3 135° 2 12 ALTiN 100
    $5.20
  • A58493 ACT #27 1 2-1/16 135° 2 12 ALTiN 12
    $4.62
  • A46454 ACT #28 1-3/4 2-7/8 135° 2 12 Straw Finish 100
    $2.77
  • A45676 ACT #28 15/16 1-15/16 135° 2 12 Straw Finish 100
    $2.43
  • A58609 ACT #28 2-7/8 2-7/8 135° 2 12 ALTiN 24
    $4.83
  • A58494 ACT #28 15/16 1-15/16 135° 2 12 ALTiN 38
    $4.20
  • A46455 ACT #29 1-3/4 2-7/8 135° 2 12 Straw Finish 100
    $2.69
  • A45677 ACT #29 15/16 1-15/16 135° 2 12 Straw Finish 100
    $2.43
  • A58610 ACT #29 2-7/8 2-7/8 135° 2 12 ALTiN 86
    $4.66
  • A58495 ACT #29 15/16 1-15/16 135° 2 12 ALTiN 26
    $4.20
  • A46456 ACT #30 1-5/8 2-3/4 135° 2 12 Straw Finish 100
    $2.59
  • A45678 ACT #30 15/16 1-15/16 135° 2 12 Straw Finish 100
    $2.35
  • A58611 ACT #30 2-3/4 2-3/4 135° 2 12 ALTiN 100
    $4.42
  • A58496 ACT #30 15/16 1-15/16 135° 2 12 ALTiN 24
    $3.96
  • A46457 ACT #31 1-5/8 2-3/4 135° 2 12 Straw Finish 100
    $2.51
  • A45679 ACT #31 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.35
  • A58612 ACT #31 2-3/4 2-3/4 135° 2 12 ALTiN Available to Order*
    $4.38
  • A58497 ACT #31 7/8 1-7/8 135° 2 12 ALTiN 24
    $3.96
  • A46458 ACT #32 1-5/8 2-3/4 135° 2 12 Straw Finish 100
    $2.51
  • A45680 ACT #32 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.35
  • A58613 ACT #32 2-3/4 2-3/4 135° 2 12 ALTiN 12
    $4.28
  • A58498 ACT #32 7/8 1-7/8 135° 2 12 ALTiN 100
    $3.96
  • A46459 ACT #33 1-1/2 2-5/8 135° 2 12 Straw Finish 100
    $2.43
  • A45681 ACT #33 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.31
  • A58614 ACT #33 2-5/8 2-5/8 135° 2 12 ALTiN 12
    $4.12
  • A58499 ACT #33 7/8 1-7/8 135° 2 12 ALTiN 38
    $3.83
  • A46460 ACT #34 1-1/2 2-5/8 135° 2 12 Straw Finish 100
    $2.43
  • A45682 ACT #34 7/8 1-7/8 135° 2 12 Straw Finish 100
    $2.31
  • A58615 ACT #34 2-5/8 2-5/8 135° 2 12 ALTiN 12
    $4.12
  • A58500 ACT #34 7/8 1-7/8 135° 2 12 ALTiN 12
    $3.83
  • A46461 ACT #35 1-1/2 2-5/8 135° 2 12 Straw Finish 100
    $2.43
  • A45683 ACT #35 7/8 1-7/8 135° 2 12 Straw Finish Available to Order*
    $2.31
  • A58616 ACT #35 2-5/8 2-5/8 135° 2 12 ALTiN 24
    $4.12
  • A58501 ACT #35 7/8 1-7/8 135° 2 12 ALTiN 12
    $3.83
  • A46462 ACT #36 1-7/16 2-1/2 135° 2 12 Straw Finish 100
    $2.39
  • A45684 ACT #36 13/16 1-13/16 135° 2 12 Straw Finish 100
    $2.31
  • A58617 ACT #36 2-1/2 2-1/2 135° 2 12 ALTiN 24
    $4.08
  • A58502 ACT #36 13/16 1-13/16 135° 2 12 ALTiN 62
    $3.83
  • A46463 ACT #37 1-7/16 2-1/2 135° 2 12 Straw Finish 100
    $2.39
  • A45685 ACT #37 13/16 1-13/16 135° 2 12 Straw Finish 100
    $2.31
  • A58618 ACT #37 2-1/2 2-1/2 135° 2 12 ALTiN 24
    $4.08
  • A58503 ACT #37 13/16 1-13/16 135° 2 12 ALTiN 74
    $3.83
  • A46464 ACT #38 1-7/16 2-1/2 135° 2 12 Straw Finish 100
    $2.31
  • A45686 ACT #38 13/16 1-13/16 135° 2 12 Straw Finish 100
    $1.98
  • A58619 ACT #38 2-1/2 2-1/2 135° 2 12 ALTiN 100
    $3.83
  • A58504 ACT #38 13/16 1-13/16 135° 2 12 ALTiN 38
    $3.55
  • A46465 ACT #39 1-3/8 2-3/8 135° 2 12 Straw Finish 100
    $2.31

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

  • Total: items /

Adding your products to cart

View Cart Continue Shopping