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
    A78646 ACT 1/8 1/8 1.5000 (1-1/2) 60° 1 Uncoated 86
    $17.40
  • A78635 ACT 1/8 1/8 1.5000 (1-1/2) 60° 1 Uncoated 47
    $49.64
  • A78612 ACT 1/8 1/8 1.5000 (1-1/2) 60° 4 Uncoated 86
    $12.21
  • A78583 ACT 1/8 1/8 1.5000 (1-1/2) 60° 4 Uncoated 61
    $49.64
  • A78525 ACT 1/8 1/8 1.5000 (1-1/2) 60° 6 Uncoated 57
    $49.64
  • A78463 ACT 1/4 1/4 1.5000 (1-1/2) 60° 0 Uncoated 76
    $22.76
  • A47085 ACT 1/8 1/8 1-1/2 60° 6 Uncoated 15
    $20.36
  • A47051 ACT 1/8 1/8 1-1/2 60° 3 Uncoated 9
    $20.36
  • A47027 ACT 1/8 1/8 1-1/2 60° 1 Uncoated 61
    $20.36
  • A46548 ACT 1/2 1/2 3-7/8 60° 4 Uncoated 31
    $59.37
  • A46533 ACT 1/4 3/16 1-7/16 60° 1 Uncoated 31
    $18.59
  • A78654 ACT 1/8 1/8 1.5000 (1-1/2) 82° 1 Uncoated 88
    $17.40
  • A78643 ACT 1/8 1/8 1.5000 (1-1/2) 82° 1 Uncoated 58
    $49.64
  • A78620 ACT 1/8 1/8 1.5000 (1-1/2) 82° 4 Uncoated 80
    $12.21
  • A78591 ACT 1/8 1/8 1.5000 (1-1/2) 82° 4 Uncoated 62
    $49.64
  • A78533 ACT 1/8 1/8 1.5000 (1-1/2) 82° 6 Uncoated 55
    $49.64
  • A78464 ACT 1/4 1/4 2.0313 60° 0 Uncoated 87
    $29.94
  • A47093 ACT 1/8 1/8 1-1/2 82° 6 Uncoated 70
    $20.36
  • A47059 ACT 1/8 1/8 1-1/2 82° 3 Uncoated 22
    $20.36
  • A47035 ACT 1/8 1/8 1-1/2 82° 1 Uncoated 70
    $20.36
  • A46553 ACT 1/2 1/2 3-7/8 82° 4 Uncoated 34
    $59.37
  • A46538 ACT 1/4 3/16 1-7/16 82° 1 Uncoated 100
    $18.59
  • A78662 ACT 1/8 1/8 1.5000 (1-1/2) 90° 1 Uncoated 68
    $17.40
  • A78628 ACT 1/8 1/8 1.5000 (1-1/2) 90° 4 Uncoated 69
    $12.21
  • A78559 ACT 1/8 1/8 1.5000 (1-1/2) 90° 1 Uncoated 59
    $49.64
  • A78501 ACT 1/8 1/8 1.5000 (1-1/2) 90° 4 Uncoated 52
    $49.64
  • A78473 ACT 1/8 1/8 1.5000 (1-1/2) 90° 6 Uncoated 24
    $49.64
  • A78465 ACT 1/4 1/4 2.0000 (2) 60° 0 Uncoated 87
    $38.22
  • A47101 ACT 1/8 1/8 1-1/2 90° 6 Uncoated 23
    $20.36
  • A47067 ACT 1/8 1/8 1-1/2 90° 3 Uncoated 73
    $20.36
  • A47043 ACT 1/8 1/8 1-1/2 90° 1 Uncoated 32
    $20.36
  • A46549 ACT 5/8 1/2 4 60° 4 Uncoated 16
    $66.87
  • A46543 ACT 1/4 3/16 1-7/16 90° 1 Uncoated 100
    $18.59
  • A78596 ACT 1/8 1/8 1.5000 (1-1/2) 100° 1 Uncoated 68
    $17.40
  • A78567 ACT 1/8 1/8 1.5000 (1-1/2) 100° 1 Uncoated 61
    $49.64
  • A78538 ACT 1/8 1/8 1.5000 (1-1/2) 100° 4 Uncoated 89
    $12.21
  • A78509 ACT 1/8 1/8 1.5000 (1-1/2) 100° 4 Uncoated 62
    $49.64
  • A78481 ACT 1/8 1/8 1.5000 (1-1/2) 100° 6 Uncoated 65
    $49.64
  • A78454 ACT 1/4 1/4 2.0313 82° 0 Uncoated 70
    $29.94
  • A56082 ACT 1/8 1/8 1-1/2 100° 6 Uncoated 11
    $14.51
  • A56074 ACT 1/8 1/8 1-1/2 100° 3 Uncoated 59
    $20.36
  • A56066 ACT 1/8 1/8 1-1/2 100° 1 Uncoated 13
    $20.36
  • A46554 ACT 5/8 1/2 4 82° 4 Uncoated 33
    $66.87
  • A46534 ACT 3/8 1/4 1-21/32 60° 1 Uncoated 21
    $21.19
  • A78604 ACT 1/8 1/8 1.5000 (1-1/2) 120° 1 Uncoated 82
    $17.40
  • A78575 ACT 1/8 1/8 1.5000 (1-1/2) 120° 1 Uncoated 59
    $49.64
  • A78546 ACT 1/8 1/8 1.5000 (1-1/2) 120° 4 Uncoated 24
    $12.21
  • A78517 ACT 1/8 1/8 1.5000 (1-1/2) 120° 4 Uncoated 38
    $49.64
  • A78489 ACT 1/8 1/8 1.5000 (1-1/2) 120° 6 Uncoated 61
    $49.64
  • A78455 ACT 1/4 1/4 2.0000 (2) 82° 0 Uncoated 20
    $38.22
  • A47086 ACT 3/16 3/16 2 60° 6 Uncoated 4
    $21.64
  • A47052 ACT 3/16 3/16 2 60° 3 Uncoated 21
    $21.64
  • A47028 ACT 3/16 3/16 2 60° 1 Uncoated 17
    $21.64
  • A46550 ACT 3/4 1/2 4-1/8 60° 4 Uncoated 16
    $85.23
  • A46539 ACT 3/8 1/4 1-21/32 82° 1 Uncoated 23
    $21.19
  • A78647 ACT 3/16 3/16 2.0000 (2) 60° 1 Uncoated 85
    $18.77
  • A78636 ACT 3/16 3/16 2.0000 (2) 60° 1 Uncoated 65
    $63.83
  • A78613 ACT 3/16 3/16 2.0000 (2) 60° 4 Uncoated 20
    $12.49
  • A78584 ACT 3/16 3/16 2.0000 (2) 60° 4 Uncoated 59
    $63.83
  • A78526 ACT 3/16 3/16 2.0000 (2) 60° 6 Uncoated 65
    $63.83
  • A78468 ACT 1/4 1/4 1.5000 (1-1/2) 82° 0 Uncoated 18
    $22.76
  • A47094 ACT 3/16 3/16 2 82° 6 Uncoated 25
    $21.64
  • A47060 ACT 3/16 3/16 2 82° 3 Uncoated 100
    $21.64
  • A47036 ACT 3/16 3/16 2 82° 1 Uncoated 50
    $21.64
  • A46555 ACT 3/4 1/2 4-1/8 82° 4 Uncoated 22
    $85.23
  • A46544 ACT 3/8 1/4 1-21/32 90° 1 Uncoated 77
    $21.19
  • A78655 ACT 3/16 3/16 2.0000 (2) 82° 1 Uncoated 71
    $18.77
  • A78644 ACT 3/16 3/16 2.0000 (2) 82° 1 Uncoated 60
    $63.83
  • A78621 ACT 3/16 3/16 2.0000 (2) 82° 4 Uncoated 84
    $12.49
  • A78592 ACT 3/16 3/16 2.0000 (2) 82° 4 Uncoated 51
    $63.83
  • A78534 ACT 3/16 3/16 2.0000 (2) 82° 6 Uncoated 57
    $63.83
  • A78458 ACT 1/4 1/4 1.5000 (1-1/2) 90° 0 Uncoated 62
    $22.76
  • A47102 ACT 3/16 3/16 2 90° 6 Uncoated 100
    $21.64
  • A47068 ACT 3/16 3/16 2 90° 3 Uncoated 83
    $21.64
  • A47044 ACT 3/16 3/16 2 90° 1 Uncoated 42
    $21.64
  • A46551 ACT 7/8 1/2 4-1/4 60° 4 Uncoated 16
    $100.11
  • A46535 ACT 1/2 1/4 1-13/32 60° 1 Uncoated 38
    $27.09
  • A78663 ACT 3/16 3/16 2.0000 (2) 90° 1 Uncoated 68
    $18.77
  • A78629 ACT 3/16 3/16 2.0000 (2) 90° 4 Uncoated 81
    $12.49
  • A78560 ACT 3/16 3/16 2.0000 (2) 90° 1 Uncoated 51
    $63.83
  • A78502 ACT 3/16 3/16 2.0000 (2) 90° 4 Uncoated 55
    $63.83
  • A78474 ACT 3/16 3/16 2.0000 (2) 90° 6 Uncoated 40
    $63.83
  • A78459 ACT 1/4 1/4 2.0313 90° 0 Uncoated 76
    $29.94
  • A56083 ACT 3/16 3/16 2 100° 6 Uncoated 19
    $21.64
  • A56075 ACT 3/16 3/16 2 100° 3 Uncoated 37
    $21.64
  • A56067 ACT 3/16 3/16 2 100° 1 Uncoated 19
    $21.64
  • A46556 ACT 7/8 1/2 4-1/4 82° 4 Uncoated 74
    $100.11
  • A46540 ACT 1/2 1/4 1-13/32 82° 1 Uncoated 15
    $27.09
  • A78597 ACT 3/16 3/16 2.0000 (2) 100° 1 Uncoated 71
    $18.77
  • A78568 ACT 3/16 3/16 2.0000 (2) 100° 1 Uncoated 59
    $63.83
  • A78539 ACT 3/16 3/16 2.0000 (2) 100° 4 Uncoated 73
    $12.49
  • A78510 ACT 3/16 3/16 2.0000 (2) 100° 4 Uncoated 51
    $63.83
  • A78482 ACT 3/16 3/16 2.0000 (2) 100° 6 Uncoated 59
    $63.83
  • A78460 ACT 1/4 1/4 2.0000 (2) 90° 0 Uncoated 12
    $38.22
  • A47087 ACT 1/4 1/4 2 60° 6 Uncoated 74
    $24.70
  • A47053 ACT 1/4 1/4 2 60° 3 Uncoated 74
    $24.70
  • A47029 ACT 1/4 1/4 2 60° 1 Uncoated 86
    $24.70
  • A46552 ACT 1 1/2 4-3/8 60° 4 Uncoated 50
    $103.98
  • A46545 ACT 1/2 1/4 1-13/32 90° 1 Uncoated 52
    $27.09
  • A78605 ACT 3/16 3/16 2.0000 (2) 120° 1 Uncoated 79
    $18.77
  • Total: items /

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