Cobalt Steel Drill Bits
Triumph Triumph Twist Drill
  • Cobalt Steel Drill Bits

Cobalt Steel Drill Bits

Cobalt Steel Drills
Super Duty Cobalt Drill Bits for drilling hard metals.

Cobalt Drills are the best choice for stainless steel and other difficult-to-drill alloy applications.

135-degree split-point for quick penetration and reduced walking . M-35 Cobalt steel for increased heat resistance and longer life. Heavy Duty construction.

 
IN STOCK - Available for pickup  
$2.68 / ea
qty.   
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$2.68
$3.64
$4.32
$3.75
$4.88
$4.42
$4.57
$5.50
$4.38
$6.42
$6.25
$6.71
$7.22
$9.78
$7.91
$9.27
$13.78
$11.54
$19.28
$16.46
$19.71
$20.57
$17.34
$17.04
$21.87
$60.22
$65.45
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Tech Spec Product Info User Generated Content
Size (inches)  Decimal Equivalent  Flute Length (inches)  Overall Length (inches) 
5/64  .0781 
3/32  .0937  1-1/4  2-1/4 
7/64  .1094  1-1/2  2-5/8 
1/8  .1250  1-5/8  2-3/4 
9/64  .1406  1-3/4  2-7/8 
5/32  .1562  3-1/8 
11/64  .1719  2-1/8  3-1/4 
3/16  .1875  2-5/16  3-1/2 
13/64  .2031  2-7/16  3-5/8 
7/32  .2188  2-1/2  3-3/4 
15/64  .2344  2-5/8  3-7/8 
1/4  .2500  2-3/4 
17/64  .2656  2-7/8  4-1/8 
9/32  .2812  2-15/16  4-1/4 
19/64  .2969  3-1/16  4-3/8 
5/16  .3125  3-3/16  4-1/2 
21/64  .3281  3-5/16  4-5/8 
11/32  .3438  3-7/16  4-3/4 
23/64  .3594  3-1/2  4-7/8 
3/8  .3750  3-5/8 
25/64  .3906  3-3/4  5-1/8 
13/32  .4062  3-7/8  5-1/4 
27/64  .4219  3-5/16  5-3/8 
7/16  .4375  4-1/16  5-1/2 
29/64  .4531  4-3/16  5-5/8 
15/32  .4688  4-5/16  5-3/4 
31/64  .4844  4-3/8  5-7/8 
1/2  .5000  4-1/2 
17/32  .531  4-13/16  6-5/8 
21/32  .656  5-3/16  7-1/8 
BRAND: Triumph
Type: Cobalt
4.7 3

REVIEW SNAPSHOT®

by PowerReviews
TriumphCobalt Steel Drills
 
4.7

(based on 3 reviews)

Ratings Distribution

  • 5 Stars

     

    (2)

  • 4 Stars

     

    (1)

  • 3 Stars

     

    (0)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Reviewed by 3 customers

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Displaying reviews 1-3

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5.0

Cobalt drill 3/32"

By cjb

from Old Saybrook, CT

About Me Avid Do-It-Yourselfer

Verified Reviewer

Pros

  • Did the job
  • Perfectly satisfied
  • Quality excellent

Cons

    Best Uses

    • All Around

    Comments about Triumph Cobalt Steel Drills:

    Bought several of these expecting them to break or dull quickly, have to admit one bit did the job drilling through a lot of hard steel.

    Pleasant surprise to be fully satisfied with this purchase.

    (0 of 1 customers found this review helpful)

     
    5.0

    Very high quality[...]

    By Chip

    from North Idaho

    About Me Do-It-Yourself

    Pros

    • Durability

    Cons

      Best Uses

      • In The Workshop

      Comments about Triumph Cobalt Steel Drills:

      Good product, Quick [...], Fair cost, Good company response. I'm very pleased overall.

      (1 of 2 customers found this review helpful)

       
      4.0

      Best for stainless steel

      By Cliff

      from Onset, MA

      About Me Handyman

      Staff Reviewer

      Pros

      • Effective

      Cons

      • None

      Best Uses

      • Drilling stainless
      • In The Field
      • In The Workshop

      Comments about Triumph Cobalt Steel Drills:

      I needed to drill additional holes in my SS pulpits. Ordinary HSS drills didn't work for beans. The cobalt drills were the only ones that worked.

      Displaying reviews 1-3

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