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
    A46836 ACT 3/32 1-1/4 6 135° 2 12 Straw Finish 80
    $9.03
  • A58582 ACT #1 3-7/8 3-7/8 135° 2 12 ALTiN 24
    $10.19
  • A58556 ACT A 3-7/8 3-7/8 135° 2 12 ALTiN 24
    $10.09
  • A58467 ACT #1 1-5/16 2-7/16 135° 2 12 ALTiN 38
    $9.56
  • A58441 ACT A 1-5/16 2-7/16 135° 2 12 ALTiN 24
    $9.94
  • A58583 ACT #2 3-7/8 3-7/8 135° 2 12 ALTiN 12
    $10.19
  • A58557 ACT B 4 4 135° 2 12 ALTiN 26
    $11.38
  • A58468 ACT #2 1-5/16 2-7/16 135° 2 12 ALTiN 12
    $9.56
  • A58442 ACT B 1-3/8 2-1/2 135° 2 12 ALTiN 38
    $10.47
  • A46837 ACT 7/64 1-1/2 6 135° 2 12 Straw Finish 20
    $10.23
  • A58584 ACT #3 3-3/4 3-3/4 135° 2 12 ALTiN 50
    $9.56
  • A58558 ACT C 4 4 135° 2 12 ALTiN 100
    $11.38
  • A58469 ACT #3 1-1/4 2-3/8 135° 2 12 ALTiN 50
    $9.56
  • A58443 ACT C 1-3/8 2-1/2 135° 2 12 ALTiN 100
    $10.47
  • A58585 ACT #4 3-3/4 3-3/4 135° 2 12 ALTiN 38
    $9.56
  • A58559 ACT D 4 4 135° 2 12 ALTiN 12
    $12.21
  • A58444 ACT D 1-3/8 2-1/2 135° 2 12 ALTiN 26
    $10.47
  • A46839 ACT 9/64 1-3/4 6 135° 2 12 Straw Finish 38
    $11.38
  • A58586 ACT #5 3-3/4 3-3/4 135° 2 12 ALTiN Available to Order*
    $9.56
  • A58560 ACT E 4 4 135° 2 12 ALTiN 26
    $9.56
  • A58445 ACT E 1-3/8 2-1/2 135° 2 12 ALTiN 24
    $9.60
  • A46849 ACT #10 2-7/16 6 135° 2 12 Straw Finish 100
    $12.16
  • A58587 ACT #6 3-3/4 3-3/4 135° 2 12 ALTiN 26
    $9.56
  • A58561 ACT F 4-1/8 4-1/8 135° 2 6 ALTiN 62
    $11.66
  • A58446 ACT F 1-7/16 2-5/8 135° 2 6 ALTiN 80
    $11.09
  • A46840 ACT 5/32 2 6 135° 2 12 Straw Finish 74
    $11.38
  • A78035 ACT 17/64 2-7/8 4-1/8 135° 2 1 Gold Oxide 38
    $9.86
  • A58562 ACT G 4-1/8 4-1/8 135° 2 6 ALTiN 24
    $11.66
  • A58447 ACT G 1-7/16 2-5/8 135° 2 6 ALTiN 32
    $11.09
  • A46850 ACT #11 2-5/16 6 135° 2 12 Straw Finish 100
    $11.74
  • A78036 ACT 9/32 2-15/16 4-1/4 135° 2 1 Gold Oxide 26
    $10.31
  • A78037 ACT 19/64 3-1/16 4-3/8 135° 2 1 Gold Oxide 44
    $12.62
  • A58563 ACT H 4-1/8 4-1/8 135° 2 6 ALTiN 20
    $13.15
  • A58448 ACT H 1-1/2 2-11/16 135° 2 6 ALTiN 20
    $11.88
  • A46841 ACT 11/64 2-1/8 6 135° 2 12 Straw Finish 68
    $12.53
  • A78038 ACT 5/16 3-3/16 4-1/2 135° 2 1 Gold Oxide 62
    $13.65
  • A78039 ACT 21/64 3-5/16 4-5/8 135° 2 1 Gold Oxide 32
    $14.92
  • A58564 ACT I 4-1/8 4-1/8 135° 2 6 ALTiN 56
    $13.15
  • A58449 ACT I 1-1/2 2-11/16 135° 2 6 ALTiN 32
    $11.88
  • A46851 ACT #20 2-1/8 6 135° 2 12 Straw Finish 100
    $11.05
  • A78040 ACT 11/32 3-7/16 4-3/4 135° 2 1 Gold Oxide 44
    $16.37
  • A58565 ACT J 4-1/8 4-1/8 135° 2 6 ALTiN 38
    $13.15
  • A58450 ACT J 1-1/2 2-11/16 135° 2 6 ALTiN 2
    $11.88
  • A46842 ACT 3/16 2-5/16 6 135° 2 12 Straw Finish 50
    $10.68
  • A58566 ACT K 4-1/4 4-1/4 135° 2 6 ALTiN 20
    $13.15
  • A58451 ACT K 1-1/2 2-11/16 135° 2 6 ALTiN 18
    $11.88
  • A46852 ACT #21 2-1/8 6 135° 2 12 Straw Finish 32
    $11.05
  • A58567 ACT L 4-1/4 4-1/4 135° 2 6 ALTiN 24
    $14.64
  • A58452 ACT L 1-9/16 2-3/4 135° 2 6 ALTiN 20
    $13.27
  • A46843 ACT 13/64 2-7/16 6 135° 2 12 Straw Finish 32
    $15.71
  • A58568 ACT M 4-3/8 4-3/8 135° 2 6 ALTiN 20
    $15.04
  • A58539 ACT 1/4 4 4 135° 2 12 ALTiN 100
    $9.56
  • A58453 ACT M 1-9/16 2-3/4 135° 2 6 ALTiN 20
    $13.27
  • A46853 ACT #29 1-3/4 6 135° 2 12 Straw Finish 38
    $12.25
  • A58569 ACT N 4-3/8 4-3/8 135° 2 6 ALTiN 44
    $15.04
  • A58540 ACT 17/64 4-1/8 4-1/8 135° 2 6 ALTiN 32
    $10.80
  • A58454 ACT N 1-5/8 2-13/16 135° 2 6 ALTiN 62
    $14.06
  • A58425 ACT 17/64 1-7/16 2-5/8 135° 2 6 ALTiN 74
    $9.94
  • A46844 ACT 7/32 2-1/2 6 135° 2 12 Straw Finish 56
    $15.96
  • A46521 ACT O 3-3/16 4-1/2 135° 2 6 Straw Finish 32
    $9.64
  • A45723 ACT O 1-11/16 2-15/16 135° 2 6 Straw Finish 100
    $9.11
  • A58541 ACT 9/32 4-1/4 4-1/4 135° 2 6 ALTiN 100
    $11.25
  • A58455 ACT O 1-11/16 2-15/16 135° 2 6 ALTiN 18
    $15.79
  • A58426 ACT 9/32 1-1/2 2-11/16 135° 2 6 ALTiN 38
    $10.76
  • A46522 ACT P 3-5/16 4-5/8 135° 2 6 Straw Finish 100
    $10.19
  • A45724 ACT P 1-11/16 2-15/16 135° 2 6 Straw Finish 86
    $9.11
  • A58542 ACT 19/64 4-3/8 4-3/8 135° 2 6 ALTiN 32
    $13.77
  • A58456 ACT P 1-11/16 2-15/16 135° 2 6 ALTiN 24
    $15.79
  • A58427 ACT 19/64 1-9/16 2-3/4 135° 2 6 ALTiN 38
    $12.45
  • A46523 ACT Q 3-7/16 4-3/4 135° 2 6 Straw Finish 100
    $10.52
  • A45725 ACT Q 1-11/16 3 135° 2 6 Straw Finish 100
    $9.98
  • A58543 ACT 5/16 4-1/2 4-1/2 135° 2 6 ALTiN 100
    $14.59
  • A58428 ACT 5/16 1-5/8 2-13/16 135° 2 6 ALTiN 100
    $13.03
  • A46524 ACT R 3-7/16 4-3/4 135° 2 6 Straw Finish 74
    $10.52
  • A45726 ACT R 1-11/16 3 135° 2 6 Straw Finish 74
    $9.98
  • A58544 ACT 21/64 4-5/8 4-5/8 135° 2 6 ALTiN 38
    $15.41
  • A58429 ACT 21/64 1-11/16 2-15/16 135° 2 6 ALTiN 32
    $14.76
  • A46846 ACT 1/4 2-3/4 6 135° 2 12 Straw Finish 26
    $16.61
  • A46525 ACT S 3-1/2 4-7/8 135° 2 6 Straw Finish 80
    $13.03
  • A45727 ACT S 1-3/4 3-1/16 135° 2 6 Straw Finish 86
    $12.33
  • A58430 ACT 11/32 1-11/16 3 135° 2 6 ALTiN 44
    $15.37
  • A46526 ACT T 3-1/2 4-7/8 135° 2 6 Straw Finish 32
    $13.03
  • A46416 ACT 11/32 3-7/16 4-3/4 135° 2 6 Straw Finish 100
    $9.86
  • A45728 ACT T 1-3/4 3-1/16 135° 2 6 Straw Finish 62
    $12.33
  • A45639 ACT 23/64 1-3/4 3-1/16 135° 2 6 Straw Finish 100
    $10.15
  • A46527 ACT U 3-5/8 5 135° 2 6 Straw Finish 100
    $13.03
  • A46417 ACT 23/64 3-1/2 4-7/8 135° 2 6 Straw Finish 100
    $11.25
  • A45729 ACT U 1-13/16 3-1/8 135° 2 6 Straw Finish 100
    $12.33
  • A45640 ACT 3/8 1-13/16 3-1/8 135° 2 6 Straw Finish 100
    $10.15
  • A46528 ACT V 3-5/8 5 135° 2 6 Straw Finish 56
    $14.27
  • A46418 ACT 3/8 3-5/8 5 135° 2 6 Straw Finish 100
    $11.25
  • A45730 ACT V 1-7/8 3-1/4 135° 2 6 Straw Finish 50
    $13.65
  • A45641 ACT 25/64 1-7/8 3-1/4 135° 2 6 Straw Finish 100
    $11.66
  • A46529 ACT W 3-3/4 5-1/8 135° 2 6 Straw Finish 100
    $14.27
  • A46419 ACT 25/64 3-3/4 5-1/8 135° 2 6 Straw Finish 100
    $12.86
  • A45731 ACT W 1-7/8 3-1/4 135° 2 6 Straw Finish 100
    $13.65
  • A45642 ACT 13/32 1-15/16 3-5/16 135° 2 6 Straw Finish 100
    $11.92
  • A46530 ACT X 3-3/4 5-1/8 135° 2 6 Straw Finish 68
    $14.27
  • A46420 ACT 13/32 3-7/8 5-1/4 135° 2 6 Straw Finish 100
    $13.27
  • A45732 ACT X 1-15/16 3-5/16 135° 2 6 Straw Finish 100
    $13.65

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

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