Countersinks

Countersinks

Made in USA since 1992

Which material is right for your job?

Carbide
Carbide Holds its edge in steel and stainless 1, 3 and 6 flute; 60° to 100° Best for Production countersinking, harder material
Cobalt
HSS
HSS Economical, widely used Single and 4 flute; 60°, 82°, 90° Best for General shop work, softer materials

We stock Carbide and HSS countersinks in Single Flute, Three Flute, Four Flute and Six Flute configurations. Chatter in countersinking comes from cutting edges entering and leaving the cut — the tool deflects as an edge engages and springs back as it exits. The two ways around it pull in opposite directions: a single flute cuts with one continuous edge so there is no load-and-release cycle, and it fits holes too small for a multi-flute tool; a six-flute design keeps at least two edges engaged at once and spreads the cutting force evenly around the tool, which is why six-flute countersinks are sold for chatter-free work. Either way, feed positively and let the tool cut rather than rub.

Carbide holds its edge longer in steel and stainless, while HSS remains an economical choice for general shop use. All countersinks are manufactured in the USA and typically ship the same day.

  • Compare SKU Vendor Size (D1) Shank Diameter (D2) Overall Length (L1) Included Angle (A) Number of Flutes Coating In Stock Price Quantity
    A47095 ACT 1/4 1/4 2 82° 6 Uncoated 40
    $22.14
  • A47061 ACT 1/4 1/4 2 82° 3 Uncoated 24
    $22.14
  • A47037 ACT 1/4 1/4 2 82° 1 Uncoated 28
    $22.14
  • A46536 ACT 3/4 1/2 1-27/32 60° 1 Uncoated 34
    $36.08
  • A78648 ACT 1/4 1/4 2.0000 (2) 60° 1 Uncoated Available to Order*
    $17.69
  • A78637 ACT 1/4 1/4 2.0000 (2) 60° 1 Uncoated Available to Order*
    $61.81
  • A78614 ACT 1/4 1/4 2.0000 (2) 60° 4 Uncoated Available to Order*
    $11.88
  • A78585 ACT 1/4 1/4 2.0000 (2) 60° 4 Uncoated Available to Order*
    $61.81
  • A78527 ACT 1/4 1/4 2.0000 (2) 60° 6 Uncoated Available to Order*
    $61.81
  • A47103 ACT 1/4 1/4 2 90° 6 Uncoated 100
    $22.14
  • A47069 ACT 1/4 1/4 2 90° 3 Uncoated 72
    $22.14
  • A47045 ACT 1/4 1/4 2 90° 1 Uncoated 89
    $22.14
  • A46541 ACT 3/4 1/2 1-27/32 82° 1 Uncoated 100
    $36.08
  • A78656 ACT 1/4 1/4 2.0000 (2) 82° 1 Uncoated Available to Order*
    $17.69
  • A78645 ACT 1/4 1/4 2.0000 (2) 82° 1 Uncoated Available to Order*
    $61.81
  • A78622 ACT 1/4 1/4 2.0000 (2) 82° 4 Uncoated Available to Order*
    $11.88
  • A78593 ACT 1/4 1/4 2.0000 (2) 82° 4 Uncoated Available to Order*
    $61.81
  • A78535 ACT 1/4 1/4 2.0000 (2) 82° 6 Uncoated Available to Order*
    $61.81
  • A78456 ACT 1/2 1/2 2.6250 (2-5/8) 82° 0 Uncoated Available to Order*
    $63.53
  • A56084 ACT 1/4 1/4 2 100° 6 Uncoated 100
    $22.14
  • A56076 ACT 1/4 1/4 2 100° 3 Uncoated 47
    $22.14
  • A56068 ACT 1/4 1/4 2 100° 1 Uncoated 81
    $22.14
  • A46546 ACT 3/4 1/2 1-27/32 90° 1 Uncoated 21
    $36.08
  • A78664 ACT 1/4 1/4 2.0000 (2) 90° 1 Uncoated Available to Order*
    $17.69
  • A78630 ACT 1/4 1/4 2.0000 (2) 90° 4 Uncoated Available to Order*
    $11.88
  • A78561 ACT 1/4 1/4 2.0000 (2) 90° 1 Uncoated Available to Order*
    $61.81
  • A78503 ACT 1/4 1/4 2.0000 (2) 90° 4 Uncoated Available to Order*
    $61.81
  • A78475 ACT 1/4 1/4 2.0000 (2) 90° 6 Uncoated Available to Order*
    $61.81
  • A47088 ACT 3/8 1/4 2-1/2 60° 6 Uncoated 100
    $40.09
  • A47054 ACT 3/8 1/4 2-1/2 60° 3 Uncoated 58
    $40.09
  • A47030 ACT 3/8 1/4 2 60° 1 Uncoated 22
    $40.09
  • A46537 ACT 1 1/2 2-13/16 60° 1 Uncoated 21
    $56.17
  • A78598 ACT 1/4 1/4 2.0000 (2) 100° 1 Uncoated Available to Order*
    $17.69
  • A78569 ACT 1/4 1/4 2.0000 (2) 100° 1 Uncoated Available to Order*
    $61.81
  • A78540 ACT 1/4 1/4 2.0000 (2) 100° 4 Uncoated Available to Order*
    $11.88
  • A78511 ACT 1/4 1/4 2.0000 (2) 100° 4 Uncoated Available to Order*
    $61.81
  • A78483 ACT 1/4 1/4 2.0000 (2) 100° 6 Uncoated Available to Order*
    $61.81
  • A78461 ACT 1/2 1/2 2.6250 (2-5/8) 90° 0 Uncoated Available to Order*
    $63.53
  • A47096 ACT 3/8 1/4 2-1/2 82° 6 Uncoated 60
    $40.09
  • A47062 ACT 3/8 1/4 2-1/2 82° 3 Uncoated 50
    $40.09
  • A47038 ACT 3/8 1/4 2 82° 1 Uncoated 26
    $40.09
  • A46542 ACT 1 1/2 2-13/16 82° 1 Uncoated 100
    $56.17
  • A78606 ACT 1/4 1/4 2.0000 (2) 120° 1 Uncoated Available to Order*
    $17.69
  • A78577 ACT 1/4 1/4 2.0000 (2) 120° 1 Uncoated Available to Order*
    $61.81
  • A78548 ACT 1/4 1/4 2.0000 (2) 120° 4 Uncoated Available to Order*
    $11.88
  • A78519 ACT 1/4 1/4 2.0000 (2) 120° 4 Uncoated Available to Order*
    $61.81
  • A78491 ACT 1/4 1/4 2.0000 (2) 120° 6 Uncoated Available to Order*
    $61.81
  • A47104 ACT 3/8 1/4 2-1/2 90° 6 Uncoated 100
    $40.09
  • A47070 ACT 3/8 1/4 2-1/2 90° 3 Uncoated 22
    $40.09
  • A47046 ACT 3/8 1/4 2 90° 1 Uncoated 48
    $40.09
  • A46547 ACT 1 1/2 2-13/16 90° 1 Uncoated 26
    $56.17
  • A78649 ACT 5/16 5/16 2.5000 (2-1/2) 60° 1 Uncoated Available to Order*
    $20.20
  • A78615 ACT 5/16 5/16 2.5000 (2-1/2) 60° 4 Uncoated Available to Order*
    $13.86
  • A56085 ACT 3/8 1/4 2-5/8 100° 6 Uncoated 100
    $40.09
  • A56077 ACT 3/8 1/4 2-5/8 100° 3 Uncoated 26
    $40.09
  • A56069 ACT 3/8 1/4 2-5/8 100° 1 Uncoated 100
    $40.09
  • A78657 ACT 5/16 5/16 2.5000 (2-1/2) 82° 1 Uncoated Available to Order*
    $20.20
  • A78623 ACT 5/16 5/16 2.5000 (2-1/2) 82° 4 Uncoated Available to Order*
    $13.86
  • A47089 ACT 1/2 1/4 2-1/2 60° 6 Uncoated 100
    $49.44
  • A47055 ACT 1/2 1/4 2-1/2 60° 3 Uncoated 24
    $49.44
  • A47031 ACT 1/2 1/4 2 60° 1 Uncoated 48
    $49.44
  • A78665 ACT 5/16 5/16 2.5000 (2-1/2) 90° 1 Uncoated Available to Order*
    $20.20
  • A78631 ACT 5/16 5/16 2.5000 (2-1/2) 90° 4 Uncoated Available to Order*
    $13.86
  • A47097 ACT 1/2 1/4 2-1/2 82° 6 Uncoated 100
    $49.44
  • A47063 ACT 1/2 1/4 2-1/2 82° 3 Uncoated 25
    $49.44
  • A47039 ACT 1/2 1/4 2 82° 1 Uncoated 69
    $49.44
  • A78599 ACT 5/16 5/16 2.5000 (2-1/2) 100° 1 Uncoated Available to Order*
    $20.20
  • A78541 ACT 5/16 5/16 2.5000 (2-1/2) 100° 4 Uncoated Available to Order*
    $13.86
  • A47105 ACT 1/2 1/4 2-1/2 90° 6 Uncoated 58
    $49.44
  • A47071 ACT 1/2 1/4 2-1/2 90° 3 Uncoated 58
    $49.44
  • A47047 ACT 1/2 1/4 2 90° 1 Uncoated 41
    $49.44
  • A78607 ACT 5/16 5/16 2.5000 (2-1/2) 120° 1 Uncoated Available to Order*
    $20.20
  • A78549 ACT 5/16 5/16 2.5000 (2-1/2) 120° 4 Uncoated Available to Order*
    $13.86
  • A56086 ACT 1/2 1/4 2-5/8 100° 6 Uncoated 32
    $49.44
  • A56078 ACT 1/2 1/4 2-5/8 100° 3 Uncoated 53
    $49.44
  • A56070 ACT 1/2 1/4 2-5/8 100° 1 Uncoated Available to Order*
    $49.44
  • A78650 ACT 3/8 3/8 2.5000 (2-1/2) 60° 1 Uncoated Available to Order*
    $22.64
  • A78616 ACT 3/8 3/8 2.5000 (2-1/2) 60° 4 Uncoated Available to Order*
    $15.51
  • A47090 ACT 5/8 1/2 2-5/8 60° 6 Uncoated 35
    $72.45
  • A47056 ACT 5/8 1/2 2-5/8 60° 3 Uncoated 55
    $72.45
  • A47032 ACT 5/8 1/2 2-3/4 60° 1 Uncoated 25
    $72.45
  • A78658 ACT 3/8 3/8 2.5000 (2-1/2) 82° 1 Uncoated Available to Order*
    $22.64
  • A78624 ACT 3/8 3/8 2.5000 (2-1/2) 82° 4 Uncoated Available to Order*
    $15.51
  • A47098 ACT 5/8 1/2 2-5/8 82° 6 Uncoated 30
    $72.45
  • A47064 ACT 5/8 1/2 2-5/8 82° 3 Uncoated 29
    $72.45
  • A47040 ACT 5/8 1/2 2-3/4 82° 1 Uncoated 74
    $72.45
  • A78666 ACT 3/8 3/8 2.5000 (2-1/2) 90° 1 Uncoated Available to Order*
    $22.64
  • A78632 ACT 3/8 3/8 2.5000 (2-1/2) 90° 4 Uncoated Available to Order*
    $15.51
  • A47106 ACT 5/8 1/2 2-5/8 90° 6 Uncoated 61
    $72.45
  • A47072 ACT 5/8 1/2 2-5/8 90° 3 Uncoated 21
    $72.45
  • A47048 ACT 5/8 1/2 2-3/4 90° 1 Uncoated 30
    $72.45
  • A78600 ACT 3/8 3/8 2.5000 (2-1/2) 100° 1 Uncoated Available to Order*
    $22.64
  • A78542 ACT 3/8 3/8 2.5000 (2-1/2) 100° 4 Uncoated Available to Order*
    $15.51
  • A56087 ACT 5/8 3/8 2-3/4 100° 6 Uncoated 42
    $72.45
  • A56079 ACT 5/8 3/8 2-3/4 100° 3 Uncoated 77
    $72.45
  • A56071 ACT 5/8 3/8 2-3/4 100° 1 Uncoated 46
    $72.45
  • A78608 ACT 3/8 3/8 2.5000 (2-1/2) 120° 1 Uncoated Available to Order*
    $22.64
  • A78550 ACT 3/8 3/8 2.5000 (2-1/2) 120° 4 Uncoated Available to Order*
    $15.51
  • A78651 ACT 1/2 1/2 3.0000 (3) 60° 1 Uncoated Available to Order*
    $28.29
  • A78617 ACT 1/2 1/2 3.0000 (3) 60° 4 Uncoated Available to Order*
    $19.34

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

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