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
    A64885 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 Uncoated Available to Order*
    $10.15
  • A64809 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 Uncoated Available to Order*
    $10.36
  • A61425 HTC Tool 1/32 3/16 3/64 1 30° 2 Uncoated Available to Order*
    $8.57
  • A61421 HTC Tool 1/32 3/16 3/32 1-1/8 30° 2 Uncoated Available to Order*
    $8.57
  • A61117 HTC Tool 2 2 4 7-3/4 30° 6 Uncoated Available to Order*
    $172.40
  • A64888 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiN Available to Order*
    $13.47
  • A64812 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiN Available to Order*
    $13.68
  • A61426 HTC Tool 1/32 3/16 3/64 1 30° 2 TiCN Available to Order*
    $11.62
  • A61422 HTC Tool 1/32 3/16 3/32 1-1/8 30° 2 TiCN Available to Order*
    $11.62
  • A61118 HTC Tool 2 2 4 7-3/4 30° 6 TiCN Available to Order*
    $234.95
  • A64886 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiCN Available to Order*
    $15.12
  • A64810 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiCN Available to Order*
    $15.33
  • A61427 HTC Tool 1/32 3/16 3/64 1 30° 2 TiALN Available to Order*
    $12.16
  • A61423 HTC Tool 1/32 3/16 3/32 1-1/8 30° 2 TiALN Available to Order*
    $12.16
  • A61119 HTC Tool 2 2 4 7-3/4 30° 6 TiALN Available to Order*
    $245.35
  • A64887 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiALN Available to Order*
    $15.95
  • A64811 HTC Tool 1/8 3/8 3/8 2-5/16 30° 2 TiALN Available to Order*
    $16.16
  • A61428 HTC Tool 1/32 3/16 3/64 1 30° 2 TiN Available to Order*
    $10.60
  • A61424 HTC Tool 1/32 3/16 3/32 1-1/8 30° 2 TiN Available to Order*
    $10.60
  • A61120 HTC Tool 2 2 4 7-3/4 30° 6 TiN Available to Order*
    $214.09
  • A66232 HTC Tool 3/16 3/8 3/8 2-5/16 30° 2 Uncoated Available to Order*
    $10.36
  • A64893 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 Uncoated Available to Order*
    $13.50
  • A61989 HTC Tool 3/64 3/16 1/16 1 30° 2 Uncoated Available to Order*
    $8.57
  • A61985 HTC Tool 3/64 3/16 5/32 1-1/8 30° 2 Uncoated Available to Order*
    $8.57
  • A61125 HTC Tool 2 2 4 7-3/4 30° 4 Uncoated Available to Order*
    $180.95
  • A66235 HTC Tool 3/16 3/8 3/8 2-5/16 30° 2 TiN Available to Order*
    $13.68
  • A64896 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiN Available to Order*
    $16.83
  • A61990 HTC Tool 3/64 3/16 1/16 1 30° 2 TiCN Available to Order*
    $11.62
  • A61986 HTC Tool 3/64 3/16 5/32 1-1/8 30° 2 TiCN Available to Order*
    $11.62
  • A61126 HTC Tool 2 2 4 7-3/4 30° 4 TiCN Available to Order*
    $243.46
  • A66233 HTC Tool 3/16 3/8 3/8 2-5/16 30° 2 TiCN Available to Order*
    $15.33
  • A64894 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiCN Available to Order*
    $18.47
  • A61991 HTC Tool 3/64 3/16 1/16 1 30° 2 TiALN Available to Order*
    $12.16
  • A61987 HTC Tool 3/64 3/16 5/32 1-1/8 30° 2 TiALN Available to Order*
    $12.16
  • A61127 HTC Tool 2 2 4 7-3/4 30° 4 TiALN Available to Order*
    $253.89
  • A66234 HTC Tool 3/16 3/8 3/8 2-5/16 30° 2 TiALN Available to Order*
    $16.16
  • A64895 HTC Tool 1/8 3/8 3/8 2-5/16 30° 4 TiALN Available to Order*
    $19.30
  • A61992 HTC Tool 3/64 3/16 1/16 1 30° 2 TiN Available to Order*
    $10.60
  • A61988 HTC Tool 3/64 3/16 5/32 1-1/8 30° 2 TiN Available to Order*
    $10.60
  • A61128 HTC Tool 2 2 4 7-3/4 30° 4 TiN Available to Order*
    $222.65
  • A66312 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 Uncoated Available to Order*
    $10.15
  • A65005 HTC Tool 1/16 3/16 3/32 1 30° 2 Uncoated Available to Order*
    $8.57
  • A65001 HTC Tool 1/16 3/16 7/32 1-1/8 30° 2 Uncoated Available to Order*
    $8.57
  • A64373 HTC Tool 1/4 3/8 1/2 2-9/16 30° 2 Uncoated Available to Order*
    $10.36
  • A61121 HTC Tool 2 2 6 9-3/4 30° 6 Uncoated Available to Order*
    $225.17
  • A66315 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiN Available to Order*
    $13.47
  • A65006 HTC Tool 1/16 3/16 3/32 1 30° 2 TiCN Available to Order*
    $11.62
  • A65002 HTC Tool 1/16 3/16 7/32 1-1/8 30° 2 TiCN Available to Order*
    $11.62
  • A64376 HTC Tool 1/4 3/8 1/2 2-9/16 30° 2 TiN Available to Order*
    $13.68
  • A61122 HTC Tool 2 2 6 9-3/4 30° 6 TiCN Available to Order*
    $309.78
  • A66313 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiCN Available to Order*
    $15.12
  • A65007 HTC Tool 1/16 3/16 3/32 1 30° 2 TiALN Available to Order*
    $12.16
  • A65003 HTC Tool 1/16 3/16 7/32 1-1/8 30° 2 TiALN Available to Order*
    $12.16
  • A64374 HTC Tool 1/4 3/8 1/2 2-9/16 30° 2 TiCN Available to Order*
    $15.33
  • A61123 HTC Tool 2 2 6 9-3/4 30° 6 TiALN Available to Order*
    $323.87
  • A66314 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiALN Available to Order*
    $15.95
  • A65008 HTC Tool 1/16 3/16 3/32 1 30° 2 TiN Available to Order*
    $10.60
  • A65004 HTC Tool 1/16 3/16 7/32 1-1/8 30° 2 TiN Available to Order*
    $10.60
  • A64375 HTC Tool 1/4 3/8 1/2 2-9/16 30° 2 TiALN Available to Order*
    $16.16
  • A61124 HTC Tool 2 2 6 9-3/4 30° 6 TiN Available to Order*
    $281.59
  • A66320 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 Uncoated Available to Order*
    $13.50
  • A64369 HTC Tool 1/4 3/8 1 3-1/16 30° 2 Uncoated Available to Order*
    $16.79
  • A62029 HTC Tool 5/64 3/16 5/32 1 30° 2 Uncoated Available to Order*
    $8.57
  • A62025 HTC Tool 5/64 3/16 1/4 1-1/8 30° 2 Uncoated Available to Order*
    $8.57
  • A61129 HTC Tool 2 2 6 9-3/4 30° 4 Uncoated Available to Order*
    $225.17
  • A66323 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiN Available to Order*
    $16.83
  • A64372 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiN Available to Order*
    $19.45
  • A62030 HTC Tool 5/64 3/16 5/32 1 30° 2 TiCN Available to Order*
    $11.62
  • A62026 HTC Tool 5/64 3/16 1/4 1-1/8 30° 2 TiCN Available to Order*
    $11.62
  • A61130 HTC Tool 2 2 6 9-3/4 30° 4 TiCN Available to Order*
    $309.78
  • A66321 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiCN Available to Order*
    $18.47
  • A64370 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiCN Available to Order*
    $20.77
  • A62031 HTC Tool 5/64 3/16 5/32 1 30° 2 TiALN Available to Order*
    $12.16
  • A62027 HTC Tool 5/64 3/16 1/4 1-1/8 30° 2 TiALN Available to Order*
    $12.16
  • A61131 HTC Tool 2 2 6 9-3/4 30° 4 TiALN Available to Order*
    $323.87
  • A66322 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiALN Available to Order*
    $19.30
  • A64371 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiALN Available to Order*
    $21.42
  • A62032 HTC Tool 5/64 3/16 5/32 1 30° 2 TiN Available to Order*
    $10.60
  • A62028 HTC Tool 5/64 3/16 1/4 1-1/8 30° 2 TiN Available to Order*
    $10.60
  • A61132 HTC Tool 2 2 6 9-3/4 30° 4 TiN Available to Order*
    $281.59
  • A64505 HTC Tool 1/4 1/4 1/2 4 35° 2 Uncoated Available to Order*
    $31.64
  • A64433 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 Uncoated Available to Order*
    $10.15
  • A61637 HTC Tool 3/32 3/16 5/32 1 30° 2 Uncoated Available to Order*
    $8.29
  • A61633 HTC Tool 3/32 3/16 5/16 1-1/8 30° 2 Uncoated Available to Order*
    $8.29
  • A64508 HTC Tool 1/4 1/4 1/2 4 35° 2 TiN Available to Order*
    $36.15
  • A64436 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiN Available to Order*
    $13.47
  • A61638 HTC Tool 3/32 3/16 5/32 1 30° 2 TiCN Available to Order*
    $11.39
  • A61634 HTC Tool 3/32 3/16 5/16 1-1/8 30° 2 TiCN Available to Order*
    $11.39
  • A64506 HTC Tool 1/4 1/4 1/2 4 35° 2 TiCN Available to Order*
    $38.36
  • A64434 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiCN Available to Order*
    $15.12
  • A61639 HTC Tool 3/32 3/16 5/32 1 30° 2 TiALN Available to Order*
    $11.89
  • A61635 HTC Tool 3/32 3/16 5/16 1-1/8 30° 2 TiALN Available to Order*
    $11.89
  • A64507 HTC Tool 1/4 1/4 1/2 4 35° 2 TiALN Available to Order*
    $39.48
  • A64435 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiALN Available to Order*
    $15.95
  • A61640 HTC Tool 3/32 3/16 5/32 1 30° 2 TiN Available to Order*
    $10.35
  • A61636 HTC Tool 3/32 3/16 5/16 1-1/8 30° 2 TiN Available to Order*
    $10.35
  • A66931 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $10.36
  • A64449 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 Uncoated Available to Order*
    $13.50
  • A62093 HTC Tool 7/64 3/16 3/16 1 30° 2 Uncoated Available to Order*
    $8.29
  • A62089 HTC Tool 7/64 3/16 11/32 1-1/8 30° 2 Uncoated Available to Order*
    $8.29

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

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