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
    A65993 HTC Tool 3/8 3/8 3/4 5 35° 2 TiCN Available to Order*
    $43.91
  • A64426 HTC Tool 1/4 3/8 1-3/4 3-1/2 30° 4 TiCN Available to Order*
    $22.23
  • A65994 HTC Tool 3/8 3/8 3/4 5 35° 2 TiALN Available to Order*
    $45.75
  • A64427 HTC Tool 1/4 3/8 1-3/4 3-1/2 30° 4 TiALN Available to Order*
    $23.06
  • A66983 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $10.14
  • A65856 HTC Tool 3/8 3/8 1 2-3/4 30° 2 Uncoated Available to Order*
    $15.63
  • A66999 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $13.49
  • A65859 HTC Tool 3/8 3/8 1 2-3/4 30° 2 TiN Available to Order*
    $19.30
  • A76839 ACT 5/16 5/16 3/4 2-1/2 30° 4 Uncoated 53
    $27.00
  • A65857 HTC Tool 3/8 3/8 1 2-3/4 30° 2 TiCN Available to Order*
    $21.09
  • A66986 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $13.46
  • A65858 HTC Tool 3/8 3/8 1 2-3/4 30° 2 TiALN Available to Order*
    $22.02
  • A67002 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $16.81
  • A65860 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 2 Uncoated Available to Order*
    $16.79
  • A66984 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $15.12
  • A65863 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 2 TiN Available to Order*
    $20.10
  • A67000 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $18.46
  • A65861 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 2 TiCN Available to Order*
    $21.76
  • A76876 ACT 5/16 5/16 3/4 2-1/2 30° 4 ALTiN 3
    $33.73
  • A65862 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 2 TiALN Available to Order*
    $22.59
  • A67509 HTC Tool 7/16 3/8 3/4 5 35° 2 Uncoated Available to Order*
    $41.19
  • A66985 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $15.95
  • A67512 HTC Tool 7/16 3/8 3/4 5 35° 2 TiN Available to Order*
    $48.49
  • A67001 HTC Tool 5/16 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $19.29
  • A67510 HTC Tool 7/16 3/8 3/4 5 35° 2 TiCN Available to Order*
    $52.13
  • A66995 HTC Tool 5/16 3/8 1 2-3/4 30° 4 Uncoated Available to Order*
    $11.18
  • A67511 HTC Tool 7/16 3/8 3/4 5 35° 2 TiALN Available to Order*
    $53.97
  • A66998 HTC Tool 5/16 3/8 1 2-3/4 30° 4 TiN Available to Order*
    $14.50
  • A67433 HTC Tool 7/16 3/8 13/16 2-1/2 30° 2 Uncoated Available to Order*
    $15.82
  • A66996 HTC Tool 5/16 3/8 1 2-3/4 30° 4 TiCN Available to Order*
    $16.16
  • A76731 ACT 7/16 7/16 13/16 2-1/2 30° 2 Uncoated 18
    $35.79
  • A66997 HTC Tool 5/16 3/8 1 2-3/4 30° 4 TiALN Available to Order*
    $16.99
  • A67436 HTC Tool 7/16 3/8 13/16 2-1/2 30° 2 TiN Available to Order*
    $19.54
  • A66979 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 Uncoated Available to Order*
    $14.22
  • A67434 HTC Tool 7/16 3/8 13/16 2-1/2 30° 2 TiCN Available to Order*
    $21.40
  • A66991 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 Uncoated Available to Order*
    $16.54
  • A76676 ACT 7/16 7/16 13/16 2-1/2 30° 2 ALTiN 10
    $45.43
  • A66982 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiN Available to Order*
    $17.52
  • A67435 HTC Tool 7/16 3/8 13/16 2-1/2 30° 2 TiALN Available to Order*
    $22.33
  • A66994 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiN Available to Order*
    $19.87
  • A76732 ACT 1/2 1/2 13/16 2-1/2 30° 2 Uncoated 19
    $44.12
  • A66980 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiCN Available to Order*
    $19.17
  • A76677 ACT 1/2 1/2 13/16 2-1/2 30° 2 ALTiN 20
    $46.02
  • A66992 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiCN Available to Order*
    $21.51
  • A66981 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiALN Available to Order*
    $20.01
  • A63897 HTC Tool 1/2 1/2 1 3 30° 2 Uncoated Available to Order*
    $13.90
  • A76733 ACT 1/2 1/2 1 3 30° 2 Uncoated 6
    $38.01
  • A66993 HTC Tool 5/16 3/8 1-3/8 3-1/8 30° 4 TiALN Available to Order*
    $22.34
  • A66975 HTC Tool 5/16 3/8 2 3-3/4 30° 4 Uncoated Available to Order*
    $17.25
  • A63900 HTC Tool 1/2 1/2 1 3 30° 2 TiN Available to Order*
    $17.93
  • A66987 HTC Tool 5/16 3/8 2 3-3/4 30° 4 Uncoated Available to Order*
    $21.63
  • A63898 HTC Tool 1/2 1/2 1 3 30° 2 TiCN Available to Order*
    $19.96
  • A76678 ACT 1/2 1/2 1 3 30° 2 ALTiN 16
    $48.65
  • A66978 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiN Available to Order*
    $20.57
  • A66990 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiN Available to Order*
    $24.95
  • A63899 HTC Tool 1/2 1/2 1 3 30° 2 TiALN Available to Order*
    $20.97
  • A66976 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiCN Available to Order*
    $22.23
  • A64045 HTC Tool 1/2 1/2 1 6 35° 2 Uncoated Available to Order*
    $43.43
  • A66988 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiCN Available to Order*
    $26.60
  • A64048 HTC Tool 1/2 1/2 1 6 35° 2 TiN Available to Order*
    $52.16
  • A66977 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiALN Available to Order*
    $23.06
  • A64046 HTC Tool 1/2 1/2 1 6 35° 2 TiCN Available to Order*
    $56.52
  • A66989 HTC Tool 5/16 3/8 2 3-3/4 30° 4 TiALN Available to Order*
    $27.43
  • A64047 HTC Tool 1/2 1/2 1 6 35° 2 TiALN Available to Order*
    $58.72
  • A65912 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $10.14
  • A63889 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 2 Uncoated Available to Order*
    $19.80
  • A65928 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 Uncoated Available to Order*
    $13.49
  • A63892 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 2 TiN Available to Order*
    $23.85
  • A76841 ACT 3/8 3/8 3/4 2-1/2 30° 4 Uncoated 88
    $27.00
  • A63890 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 2 TiCN Available to Order*
    $25.86
  • A65915 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $13.46
  • A63891 HTC Tool 1/2 1/2 1-1/2 3-1/2 30° 2 TiALN Available to Order*
    $26.85
  • A65931 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiN Available to Order*
    $16.81
  • A63893 HTC Tool 1/2 1/2 2 4 30° 2 Uncoated Available to Order*
    $21.98
  • A65913 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $15.12
  • A63896 HTC Tool 1/2 1/2 2 4 30° 2 TiN Available to Order*
    $27.99
  • A65929 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiCN Available to Order*
    $18.46
  • A63894 HTC Tool 1/2 1/2 2 4 30° 2 TiCN Available to Order*
    $31.00
  • A76878 ACT 3/8 3/8 3/4 2-1/2 30° 4 ALTiN 15
    $33.73
  • A63895 HTC Tool 1/2 1/2 2 4 30° 2 TiALN Available to Order*
    $32.49
  • A67601 HTC Tool 9/16 1/2 1 6 35° 2 Uncoated Available to Order*
    $54.30
  • A65914 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $15.95
  • A67604 HTC Tool 9/16 1/2 1 6 35° 2 TiN Available to Order*
    $63.01
  • A65930 HTC Tool 3/8 3/8 3/4 2-1/2 30° 4 TiALN Available to Order*
    $19.29
  • A67602 HTC Tool 9/16 1/2 1 6 35° 2 TiCN Available to Order*
    $67.38
  • A65924 HTC Tool 3/8 3/8 1-1/8 2-7/8 30° 4 Uncoated Available to Order*
    $11.18
  • A67603 HTC Tool 9/16 1/2 1 6 35° 2 TiALN Available to Order*
    $69.55
  • A65927 HTC Tool 3/8 3/8 1-1/8 2-7/8 30° 4 TiN Available to Order*
    $14.50
  • A67545 HTC Tool 9/16 1/2 1-1/8 3-1/8 30° 2 Uncoated Available to Order*
    $22.03
  • A65925 HTC Tool 3/8 3/8 1-1/8 2-7/8 30° 4 TiCN Available to Order*
    $16.16
  • A76734 ACT 9/16 9/16 1-1/8 3-1/8 30° 2 Uncoated 16
    $42.80
  • A65926 HTC Tool 3/8 3/8 1-1/8 2-7/8 30° 4 TiALN Available to Order*
    $16.99
  • A67548 HTC Tool 9/16 1/2 1-1/8 3-1/8 30° 2 TiN Available to Order*
    $27.99
  • A65908 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 Uncoated Available to Order*
    $14.22
  • A67546 HTC Tool 9/16 1/2 1-1/8 3-1/8 30° 2 TiCN Available to Order*
    $30.96
  • A65920 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 Uncoated Available to Order*
    $16.54
  • A76679 ACT 9/16 9/16 1-1/8 3-1/8 30° 2 ALTiN 9
    $54.80
  • A65911 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiN Available to Order*
    $17.52
  • A67547 HTC Tool 9/16 1/2 1-1/8 3-1/8 30° 2 TiALN Available to Order*
    $32.47
  • A65923 HTC Tool 3/8 3/8 1-1/2 3-1/4 30° 4 TiN Available to Order*
    $19.87

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

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