Square End Cobalt End Mills

Square End Cobalt End Mills

2 Flute Miniature - Fractional
2 Flute Miniature - Fractional
2 Flute - Fractional
2 Flute - Fractional
4 & 6 Flute - Fractional
4 & 6 Flute - Fractional
4 & 6 Flute HD (Non CC)
4 & 6 Flute HD (Non CC)

Cobalt square end mills sit between high speed steel and carbide. They run hotter and harder than plain HSS, while staying tougher and less brittle than carbide in interrupted cuts or on less rigid machines. Stocked in 2, 4 and 6 flute fractional sizes, a miniature 2 flute range, and a heavy duty 4 and 6 flute range — uncoated or in TiALN, TiCN and TiN.

Square End vs. Ball End: A square end leaves a flat floor and a sharp internal corner, which is what slotting, pocketing and shouldering call for. For contoured or three-dimensional surfaces, use the cobalt ball end range instead.

Center Cutting vs. Non-Center Cutting: Center cutting tools have edges that meet at the axis, so they can plunge straight into solid material. Non-center cutting tools cannot — they need a pre-drilled hole or a ramped entry. Both 2 flute ranges are center cutting and the heavy duty range is not, while the 4 and 6 flute fractional range is stocked both ways, so check the specification before ordering.

Flute Count: 2 flute tools clear chips best and are the safer choice for slotting and deeper cuts in gummier materials. 4 and 6 flute tools put more cutting edges in the work for a smoother finish and greater rigidity, better suited to profiling and finishing passes.

Miniature and Heavy Duty: The miniature 2 flute range covers small-diameter detail work. The heavy duty range uses a shorter flute length for added rigidity in more aggressive cuts.

  • Compare SKU Vendor Size (D1) Shank Diameter (D2) Flute Length (L2) Reach (L3) Overall Length (L1) Length Type Corner Radius (R) Included Angle Taper Angle Helix Angle Number of Flutes Weldon Flats Flats Coating In Stock Price Quantity
    A76735 ACT 5/8 5/8 1-1/8 3-1/8 30° 2 Uncoated 16
    $58.29
  • A65909 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiCN Available to Order*
    $19.17
  • A76680 ACT 5/8 5/8 1-1/8 3-1/8 30° 2 ALTiN 12
    $68.07
  • A65921 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiCN Available to Order*
    $21.51
  • A66791 HTC Tool 5/8 5/8 1-1/4 7-1/8 35° 2 Uncoated Available to Order*
    $57.25
  • A65910 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiALN Available to Order*
    $20.01
  • A66794 HTC Tool 5/8 5/8 1-1/4 7-1/8 35° 2 TiN Available to Order*
    $68.88
  • A65922 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiALN Available to Order*
    $22.34
  • A66792 HTC Tool 5/8 5/8 1-1/4 7-1/8 35° 2 TiCN Available to Order*
    $74.69
  • A65904 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 Uncoated Available to Order*
    $18.98
  • A66793 HTC Tool 5/8 5/8 1-1/4 7-1/8 35° 2 TiALN Available to Order*
    $77.58
  • A65916 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 Uncoated Available to Order*
    $21.63
  • A66623 HTC Tool 5/8 5/8 1-5/16 3-7/16 30° 2 Uncoated Available to Order*
    $21.84
  • A65907 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiN Available to Order*
    $23.47
  • A76736 ACT 5/8 5/8 1-5/16 3-7/16 30° 2 Uncoated 16
    $48.65
  • A65919 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiN Available to Order*
    $26.09
  • A66626 HTC Tool 5/8 5/8 1-5/16 3-7/16 30° 2 TiN Available to Order*
    $27.79
  • A65905 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiCN Available to Order*
    $25.69
  • A66624 HTC Tool 5/8 5/8 1-5/16 3-7/16 30° 2 TiCN Available to Order*
    $30.78
  • A65917 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiCN Available to Order*
    $28.33
  • A76681 ACT 5/8 5/8 1-5/16 3-7/16 30° 2 ALTiN 18
    $62.30
  • A65906 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiALN Available to Order*
    $26.82
  • A66625 HTC Tool 5/8 5/8 1-5/16 3-7/16 30° 2 TiALN Available to Order*
    $32.27
  • A65918 HTC Tool 3/8 3/8 2-1/2 4-1/4 30° 4 TiALN Available to Order*
    $29.44
  • A67473 HTC Tool 7/16 3/8 1 2-11/16 30° 4 Uncoated Available to Order*
    $18.48
  • A66615 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 2 Uncoated Available to Order*
    $26.97
  • A76843 ACT 7/16 7/16 1 2-11/16 30° 4 Uncoated 40
    $35.75
  • A66618 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 2 TiN Available to Order*
    $32.94
  • A67476 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiN Available to Order*
    $22.20
  • A66616 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 2 TiCN Available to Order*
    $35.93
  • A67474 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiCN Available to Order*
    $24.07
  • A66617 HTC Tool 5/8 5/8 1-5/8 3-3/4 30° 2 TiALN Available to Order*
    $37.41
  • A76880 ACT 7/16 7/16 1 2-11/16 30° 4 ALTiN 8
    $45.39
  • A66619 HTC Tool 5/8 5/8 2 4-1/8 30° 2 Uncoated Available to Order*
    $29.55
  • A67475 HTC Tool 7/16 3/8 1 2-11/16 30° 4 TiALN Available to Order*
    $24.99
  • A66622 HTC Tool 5/8 5/8 2 4-1/8 30° 2 TiN Available to Order*
    $37.08
  • A67469 HTC Tool 7/16 1/2 1-3/4 3-3/4 30° 4 Uncoated Available to Order*
    $25.91
  • A66620 HTC Tool 5/8 5/8 2 4-1/8 30° 2 TiCN Available to Order*
    $40.81
  • A67472 HTC Tool 7/16 1/2 1-3/4 3-3/4 30° 4 TiN Available to Order*
    $29.96
  • A66621 HTC Tool 5/8 5/8 2 4-1/8 30° 2 TiALN Available to Order*
    $42.70
  • A67470 HTC Tool 7/16 1/2 1-3/4 3-3/4 30° 4 TiCN Available to Order*
    $31.97
  • A65548 HTC Tool 3/4 5/8 1-1/4 7-1/8 35° 2 Uncoated Available to Order*
    $78.42
  • A67471 HTC Tool 7/16 1/2 1-3/4 3-3/4 30° 4 TiALN Available to Order*
    $32.97
  • A65551 HTC Tool 3/4 5/8 1-1/4 7-1/8 35° 2 TiN Available to Order*
    $90.07
  • A76845 ACT 1/2 1/2 1 2-11/16 30° 4 Uncoated 100
    $43.96
  • A65549 HTC Tool 3/4 5/8 1-1/4 7-1/8 35° 2 TiCN Available to Order*
    $95.85
  • A76882 ACT 1/2 1/2 1 2-11/16 30° 4 ALTiN 15
    $45.89
  • A65550 HTC Tool 3/4 5/8 1-1/4 7-1/8 35° 2 TiALN Available to Order*
    $98.76
  • A76737 ACT 3/4 3/4 1-5/16 3-5/16 30° 2 Uncoated Available to Order*
    $68.40
  • A63949 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 Uncoated Available to Order*
    $14.51
  • A76682 ACT 3/4 3/4 1-5/16 3-5/16 30° 2 ALTiN 16
    $71.29
  • A63973 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 Uncoated Available to Order*
    $19.23
  • A76738 ACT 3/4 3/4 1-5/16 3-7/16 30° 2 Uncoated 17
    $68.40
  • A63974 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 6 Uncoated Available to Order*
    $19.23
  • A76846 ACT 1/2 1/2 1-1/4 3-1/4 30° 4 Uncoated 88
    $35.91
  • A76683 ACT 3/4 3/4 1-5/16 3-7/16 30° 2 ALTiN 8
    $71.29
  • A65360 HTC Tool 3/4 3/4 1-5/16 3-9/16 30° 2 Uncoated Available to Order*
    $23.66
  • A63952 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiN Available to Order*
    $18.54
  • A76739 ACT 3/4 3/4 1-5/16 3-9/16 30° 2 Uncoated 24
    $68.40
  • A63977 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 6 TiN Available to Order*
    $23.25
  • A65363 HTC Tool 3/4 3/4 1-5/16 3-9/16 30° 2 TiN Available to Order*
    $30.72
  • A63980 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiN Available to Order*
    $23.25
  • A65361 HTC Tool 3/4 3/4 1-5/16 3-9/16 30° 2 TiCN Available to Order*
    $34.26
  • A63950 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiCN Available to Order*
    $20.57
  • A76684 ACT 3/4 3/4 1-5/16 3-9/16 30° 2 ALTiN 9
    $71.29
  • A63975 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 6 TiCN Available to Order*
    $25.26
  • A65362 HTC Tool 3/4 3/4 1-5/16 3-9/16 30° 2 TiALN Available to Order*
    $36.04
  • A63978 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiCN Available to Order*
    $25.26
  • A76883 ACT 1/2 1/2 1-1/4 3-1/4 30° 4 ALTiN 71
    $45.65
  • A65544 HTC Tool 3/4 3/4 1-1/2 8-1/4 35° 2 Uncoated Available to Order*
    $78.42
  • A65547 HTC Tool 3/4 3/4 1-1/2 8-1/4 35° 2 TiN Available to Order*
    $94.29
  • A63951 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiALN Available to Order*
    $21.57
  • A65545 HTC Tool 3/4 3/4 1-1/2 8-1/4 35° 2 TiCN Available to Order*
    $102.22
  • A63976 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 6 TiALN Available to Order*
    $26.27
  • A65546 HTC Tool 3/4 3/4 1-1/2 8-1/4 35° 2 TiALN Available to Order*
    $106.19
  • A63979 HTC Tool 1/2 1/2 1-1/4 3-1/4 30° 4 TiALN Available to Order*
    $26.27
  • A65348 HTC Tool 3/4 3/4 1-3/4 4 30° 2 Uncoated Available to Order*
    $33.36
  • A63969 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 4 Uncoated Available to Order*
    $18.10
  • A65351 HTC Tool 3/4 3/4 1-3/4 4 30° 2 TiN Available to Order*
    $42.26
  • A63972 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 4 TiN Available to Order*
    $22.12
  • A65349 HTC Tool 3/4 3/4 1-3/4 4 30° 2 TiCN Available to Order*
    $46.71
  • A63970 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 4 TiCN Available to Order*
    $24.15
  • A65350 HTC Tool 3/4 3/4 1-3/4 4 30° 2 TiALN Available to Order*
    $48.94
  • A63971 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 4 TiALN Available to Order*
    $25.16
  • A65352 HTC Tool 3/4 3/4 2-1/4 4-1/2 30° 2 Uncoated Available to Order*
    $31.17
  • A63945 HTC Tool 1/2 1/2 2 4 30° 4 Uncoated Available to Order*
    $19.71
  • A65355 HTC Tool 3/4 3/4 2-1/4 4-1/2 30° 2 TiN Available to Order*
    $40.10
  • A63961 HTC Tool 1/2 1/2 2 4 30° 4 Uncoated Available to Order*
    $24.48
  • A65353 HTC Tool 3/4 3/4 2-1/4 4-1/2 30° 2 TiCN Available to Order*
    $44.54
  • A63962 HTC Tool 1/2 1/2 2 4 30° 6 Uncoated Available to Order*
    $24.48
  • A65354 HTC Tool 3/4 3/4 2-1/4 4-1/2 30° 2 TiALN Available to Order*
    $46.77
  • A63948 HTC Tool 1/2 1/2 2 4 30° 4 TiN Available to Order*
    $25.70
  • A65356 HTC Tool 3/4 3/4 3-1/8 5-3/8 30° 2 Uncoated Available to Order*
    $41.19
  • A63965 HTC Tool 1/2 1/2 2 4 30° 6 TiN Available to Order*
    $30.47
  • A65359 HTC Tool 3/4 3/4 3-1/8 5-3/8 30° 2 TiN Available to Order*
    $51.19
  • A63968 HTC Tool 1/2 1/2 2 4 30° 4 TiN Available to Order*
    $30.47
  • A65357 HTC Tool 3/4 3/4 3-1/8 5-3/8 30° 2 TiCN Available to Order*
    $56.16
  • A63946 HTC Tool 1/2 1/2 2 4 30° 4 TiCN Available to Order*
    $28.72
  • A65358 HTC Tool 3/4 3/4 3-1/8 5-3/8 30° 2 TiALN Available to Order*
    $58.67
  • A63963 HTC Tool 1/2 1/2 2 4 30° 6 TiCN Available to Order*
    $33.47

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

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