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
    A78650 ACT 3/8 3/8 2.5000 (2-1/2) 60° 1 Uncoated Available to Order*
    $22.64
  • A78639 ACT 3/8 3/8 2.5000 (2-1/2) 60° 1 Uncoated Available to Order*
    $117.67
  • A78616 ACT 3/8 3/8 2.5000 (2-1/2) 60° 4 Uncoated Available to Order*
    $15.51
  • A78587 ACT 3/8 3/8 2.5000 (2-1/2) 60° 4 Uncoated Available to Order*
    $117.67
  • A78529 ACT 3/8 3/8 2.5000 (2-1/2) 60° 6 Uncoated Available to Order*
    $117.67
  • 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
  • A78555 ACT 3/8 3/8 2.5000 (2-1/2) 82° 1 Uncoated Available to Order*
    $117.67
  • A78497 ACT 3/8 3/8 2.5000 (2-1/2) 82° 4 Uncoated Available to Order*
    $117.67
  • A78469 ACT 3/8 3/8 2.5000 (2-1/2) 82° 6 Uncoated Available to Order*
    $117.67
  • 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
  • A78563 ACT 3/8 3/8 2.5000 (2-1/2) 90° 1 Uncoated Available to Order*
    $117.67
  • A78505 ACT 3/8 3/8 2.5000 (2-1/2) 90° 4 Uncoated Available to Order*
    $117.67
  • A78477 ACT 3/8 3/8 2.5000 (2-1/2) 90° 6 Uncoated Available to Order*
    $117.67
  • 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
  • A78571 ACT 3/8 3/8 2.5000 (2-1/2) 100° 1 Uncoated Available to Order*
    $117.67
  • A78542 ACT 3/8 3/8 2.5000 (2-1/2) 100° 4 Uncoated Available to Order*
    $15.51
  • A78513 ACT 3/8 3/8 2.5000 (2-1/2) 100° 4 Uncoated Available to Order*
    $117.67
  • A78485 ACT 3/8 3/8 2.5000 (2-1/2) 100° 6 Uncoated Available to Order*
    $117.67
  • 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
  • A78579 ACT 3/8 3/8 2.5000 (2-1/2) 120° 1 Uncoated Available to Order*
    $117.67
  • A78550 ACT 3/8 3/8 2.5000 (2-1/2) 120° 4 Uncoated Available to Order*
    $15.51
  • A78521 ACT 3/8 3/8 2.5000 (2-1/2) 120° 4 Uncoated Available to Order*
    $117.67
  • A78493 ACT 3/8 3/8 2.5000 (2-1/2) 120° 6 Uncoated Available to Order*
    $117.67
  • A47091 ACT 3/4 1/2 2-3/4 60° 6 Uncoated 53
    $102.66
  • A47057 ACT 3/4 1/2 2-3/4 60° 3 Uncoated 50
    $102.66
  • A47033 ACT 3/4 1/2 2-3/4 60° 1 Uncoated 28
    $102.66
  • A78651 ACT 1/2 1/2 3.0000 (3) 60° 1 Uncoated Available to Order*
    $28.29
  • A78640 ACT 1/2 1/2 3.0000 (3) 60° 1 Uncoated Available to Order*
    $165.96
  • A78617 ACT 1/2 1/2 3.0000 (3) 60° 4 Uncoated Available to Order*
    $19.34
  • A78588 ACT 1/2 1/2 3.0000 (3) 60° 4 Uncoated Available to Order*
    $165.96
  • A78530 ACT 1/2 1/2 3.0000 (3) 60° 6 Uncoated Available to Order*
    $165.96
  • A47099 ACT 3/4 1/2 2-3/4 82° 6 Uncoated 45
    $102.66
  • A47065 ACT 3/4 1/2 2-3/4 82° 3 Uncoated 42
    $102.66
  • A47041 ACT 3/4 1/2 2-3/4 82° 1 Uncoated 20
    $102.66
  • A78659 ACT 1/2 1/2 3.0000 (3) 82° 1 Uncoated Available to Order*
    $28.29
  • A78625 ACT 1/2 1/2 3.0000 (3) 82° 4 Uncoated Available to Order*
    $19.34
  • A78556 ACT 1/2 1/2 3.0000 (3) 82° 1 Uncoated Available to Order*
    $165.96
  • A78498 ACT 1/2 1/2 3.0000 (3) 82° 4 Uncoated Available to Order*
    $165.96
  • A78470 ACT 1/2 1/2 3.0000 (3) 82° 6 Uncoated Available to Order*
    $165.96
  • A47107 ACT 3/4 1/2 2-3/4 90° 6 Uncoated 40
    $102.66
  • A47073 ACT 3/4 1/2 2-3/4 90° 3 Uncoated 13
    $102.66
  • A47049 ACT 3/4 1/2 2-3/4 90° 1 Uncoated 50
    $102.66
  • A78667 ACT 1/2 1/2 3.0000 (3) 90° 1 Uncoated Available to Order*
    $28.29
  • A78633 ACT 1/2 1/2 3.0000 (3) 90° 4 Uncoated Available to Order*
    $19.34
  • A78564 ACT 1/2 1/2 3.0000 (3) 90° 1 Uncoated Available to Order*
    $165.96
  • A78506 ACT 1/2 1/2 3.0000 (3) 90° 4 Uncoated Available to Order*
    $165.96
  • A78478 ACT 1/2 1/2 3.0000 (3) 90° 6 Uncoated Available to Order*
    $165.96
  • A56088 ACT 3/4 3/8 2-3/4 100° 6 Uncoated 24
    $102.66
  • A56080 ACT 3/4 3/8 2-3/4 100° 3 Uncoated 23
    $102.66
  • A56072 ACT 3/4 3/8 2-3/4 100° 1 Uncoated 64
    $102.66
  • A78601 ACT 1/2 1/2 3.0000 (3) 100° 1 Uncoated Available to Order*
    $28.29
  • A78572 ACT 1/2 1/2 3.0000 (3) 100° 1 Uncoated Available to Order*
    $165.96
  • A78543 ACT 1/2 1/2 3.0000 (3) 100° 4 Uncoated Available to Order*
    $19.34
  • A78514 ACT 1/2 1/2 3.0000 (3) 100° 4 Uncoated Available to Order*
    $165.96
  • A78486 ACT 1/2 1/2 3.0000 (3) 100° 6 Uncoated Available to Order*
    $165.96
  • A47092 ACT 1 1/2 3 60° 6 Uncoated 32
    $164.31
  • A47058 ACT 1 1/2 3 60° 3 Uncoated 54
    $164.31
  • A47034 ACT 1 1/2 3 60° 1 Uncoated 56
    $164.31
  • A78609 ACT 1/2 1/2 3.0000 (3) 120° 1 Uncoated Available to Order*
    $28.29
  • A78580 ACT 1/2 1/2 3.0000 (3) 120° 1 Uncoated Available to Order*
    $165.96
  • A78551 ACT 1/2 1/2 3.0000 (3) 120° 4 Uncoated Available to Order*
    $19.34
  • A78522 ACT 1/2 1/2 3.0000 (3) 120° 4 Uncoated Available to Order*
    $165.96
  • A78494 ACT 1/2 1/2 3.0000 (3) 120° 6 Uncoated Available to Order*
    $165.96
  • A47100 ACT 1 1/2 3 82° 6 Uncoated 46
    $164.31
  • A47066 ACT 1 1/2 3 82° 3 Uncoated 66
    $164.31
  • A47042 ACT 1 1/2 3 82° 1 Uncoated 40
    $164.31
  • A78652 ACT 5/8 5/8 3.5000 (3-1/2) 60° 1 Uncoated Available to Order*
    $40.94
  • A78641 ACT 5/8 5/8 3.5000 (3-1/2) 60° 1 Uncoated Available to Order*
    $220.25
  • A78618 ACT 5/8 5/8 3.5000 (3-1/2) 60° 4 Uncoated Available to Order*
    $28.08
  • A78589 ACT 5/8 5/8 3.5000 (3-1/2) 60° 4 Uncoated Available to Order*
    $220.25
  • A78531 ACT 5/8 5/8 3.5000 (3-1/2) 60° 6 Uncoated Available to Order*
    $220.25
  • A47108 ACT 1 1/2 3 90° 6 Uncoated 37
    $164.31
  • A47074 ACT 1 1/2 3 90° 3 Uncoated 63
    $164.31
  • A47050 ACT 1 1/2 3 90° 1 Uncoated 22
    $164.31
  • A78660 ACT 5/8 5/8 3.5000 (3-1/2) 82° 1 Uncoated Available to Order*
    $40.94
  • A78626 ACT 5/8 5/8 3.5000 (3-1/2) 82° 4 Uncoated Available to Order*
    $28.08
  • A78557 ACT 5/8 5/8 3.5000 (3-1/2) 82° 1 Uncoated Available to Order*
    $220.25
  • A78499 ACT 5/8 5/8 3.5000 (3-1/2) 82° 4 Uncoated Available to Order*
    $220.25
  • A78471 ACT 5/8 5/8 3.5000 (3-1/2) 82° 6 Uncoated Available to Order*
    $220.25
  • A56089 ACT 1 1/2 3 100° 6 Uncoated 51
    $164.31
  • A56081 ACT 1 1/2 3 100° 3 Uncoated 20
    $164.31
  • A56073 ACT 1 1/2 3 100° 1 Uncoated 46
    $164.31
  • A78668 ACT 5/8 5/8 3.5000 (3-1/2) 90° 1 Uncoated Available to Order*
    $40.94
  • A78634 ACT 5/8 5/8 3.5000 (3-1/2) 90° 4 Uncoated Available to Order*
    $28.08
  • A78565 ACT 5/8 5/8 3.5000 (3-1/2) 90° 1 Uncoated Available to Order*
    $220.25
  • A78507 ACT 5/8 5/8 3.5000 (3-1/2) 90° 4 Uncoated Available to Order*
    $220.25

* 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