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
    A66322 HTC Tool 3/16 3/8 1/2 2-3/8 30° 4 TiALN Available to Order*
    $19.29
  • A64507 HTC Tool 1/4 1/4 1/2 4 35° 2 TiALN Available to Order*
    $39.48
  • A62094 HTC Tool 7/64 3/16 3/16 1 30° 2 TiCN Available to Order*
    $11.37
  • A62090 HTC Tool 7/64 3/16 11/32 1-1/8 30° 2 TiCN Available to Order*
    $11.37
  • A76836 ACT 7/32 7/32 1/2 2-3/8 30° 4 Uncoated 19
    $36.28
  • A64369 HTC Tool 1/4 3/8 1 3-1/16 30° 2 Uncoated Available to Order*
    $16.79
  • A62095 HTC Tool 7/64 3/16 3/16 1 30° 2 TiALN Available to Order*
    $11.89
  • A62091 HTC Tool 7/64 3/16 11/32 1-1/8 30° 2 TiALN Available to Order*
    $11.89
  • A76873 ACT 7/32 7/32 1/2 2-3/8 30° 4 ALTiN 20
    $45.81
  • A64372 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiN Available to Order*
    $19.44
  • A62096 HTC Tool 7/64 3/16 3/16 1 30° 2 TiN Available to Order*
    $10.34
  • A62092 HTC Tool 7/64 3/16 11/32 1-1/8 30° 2 TiN Available to Order*
    $10.34
  • A76837 ACT 1/4 1/4 5/8 2-7/16 30° 4 Uncoated 100
    $27.00
  • A64857 HTC Tool 1/8 3/16 3/16 1 30° 2 Uncoated Available to Order*
    $8.28
  • A64853 HTC Tool 1/8 3/16 3/8 1-1/8 30° 2 Uncoated Available to Order*
    $8.28
  • A64370 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiCN Available to Order*
    $20.76
  • A76874 ACT 1/4 1/4 5/8 2-7/16 30° 4 ALTiN 71
    $33.73
  • A64858 HTC Tool 1/8 3/16 3/16 1 30° 2 TiCN Available to Order*
    $11.37
  • A64854 HTC Tool 1/8 3/16 3/8 1-1/8 30° 2 TiCN Available to Order*
    $11.37
  • A64371 HTC Tool 1/4 3/8 1 3-1/16 30° 2 TiALN Available to Order*
    $21.42
  • A67051 HTC Tool 5/16 1/4 1/2 4 35° 2 Uncoated Available to Order*
    $32.31
  • A64859 HTC Tool 1/8 3/16 3/16 1 30° 2 TiALN Available to Order*
    $11.89
  • A64855 HTC Tool 1/8 3/16 3/8 1-1/8 30° 2 TiALN Available to Order*
    $11.89
  • A64433 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 Uncoated Available to Order*
    $10.14
  • A67054 HTC Tool 5/16 1/4 1/2 4 35° 2 TiN Available to Order*
    $36.78
  • A64860 HTC Tool 1/8 3/16 3/16 1 30° 2 TiN Available to Order*
    $10.34
  • A64856 HTC Tool 1/8 3/16 3/8 1-1/8 30° 2 TiN Available to Order*
    $10.34
  • A64449 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 Uncoated Available to Order*
    $13.49
  • A67052 HTC Tool 5/16 1/4 1/2 4 35° 2 TiCN Available to Order*
    $39.02
  • A64436 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiN Available to Order*
    $13.46
  • A62137 HTC Tool 9/64 3/16 7/32 1 30° 2 Uncoated Available to Order*
    $8.28
  • A62133 HTC Tool 9/64 3/16 13/32 1-1/8 30° 2 Uncoated Available to Order*
    $8.28
  • A67053 HTC Tool 5/16 1/4 1/2 4 35° 2 TiALN Available to Order*
    $40.13
  • A64452 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiN Available to Order*
    $16.81
  • A62138 HTC Tool 9/64 3/16 7/32 1 30° 2 TiCN Available to Order*
    $11.37
  • A62134 HTC Tool 9/64 3/16 13/32 1-1/8 30° 2 TiCN Available to Order*
    $11.37
  • A66931 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $10.35
  • A64434 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiCN Available to Order*
    $15.12
  • A62139 HTC Tool 9/64 3/16 7/32 1 30° 2 TiALN Available to Order*
    $11.89
  • A62135 HTC Tool 9/64 3/16 13/32 1-1/8 30° 2 TiALN Available to Order*
    $11.89
  • A76729 ACT 5/16 5/16 9/16 2-5/16 30° 2 Uncoated 17
    $32.90
  • A64450 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiCN Available to Order*
    $18.46
  • A62140 HTC Tool 9/64 3/16 7/32 1 30° 2 TiN Available to Order*
    $10.34
  • A62136 HTC Tool 9/64 3/16 13/32 1-1/8 30° 2 TiN Available to Order*
    $10.34
  • A66934 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiN Available to Order*
    $13.67
  • A64435 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiALN Available to Order*
    $15.95
  • A61757 HTC Tool 5/32 3/16 1/4 1-3/8 30° 2 Uncoated Available to Order*
    $8.28
  • A61753 HTC Tool 5/32 3/16 7/16 1-7/16 30° 2 Uncoated Available to Order*
    $8.28
  • A66932 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiCN Available to Order*
    $15.33
  • A64451 HTC Tool 1/4 3/8 5/8 2-1/2 30° 4 TiALN Available to Order*
    $19.29
  • A61758 HTC Tool 5/32 3/16 1/4 1-3/8 30° 2 TiCN Available to Order*
    $11.37
  • A61754 HTC Tool 5/32 3/16 7/16 1-7/16 30° 2 TiCN Available to Order*
    $11.37
  • A76674 ACT 5/16 5/16 9/16 2-5/16 30° 2 ALTiN 10
    $33.32
  • A64445 HTC Tool 1/4 3/8 3/4 2-9/16 30° 4 Uncoated Available to Order*
    $11.18
  • A61759 HTC Tool 5/32 3/16 1/4 1-3/8 30° 2 TiALN Available to Order*
    $11.89
  • A61755 HTC Tool 5/32 3/16 7/16 1-7/16 30° 2 TiALN Available to Order*
    $11.89
  • A66933 HTC Tool 5/16 3/8 9/16 2-5/16 30° 2 TiALN Available to Order*
    $16.16
  • A64448 HTC Tool 1/4 3/8 3/4 2-9/16 30° 4 TiN Available to Order*
    $14.50
  • A61760 HTC Tool 5/32 3/16 1/4 1-3/8 30° 2 TiN Available to Order*
    $10.34
  • A61756 HTC Tool 5/32 3/16 7/16 1-7/16 30° 2 TiN Available to Order*
    $10.34
  • A66927 HTC Tool 5/16 3/8 1-1/4 3-5/16 30° 2 Uncoated Available to Order*
    $17.17
  • A64446 HTC Tool 1/4 3/8 3/4 2-9/16 30° 4 TiCN Available to Order*
    $16.16
  • A62185 HTC Tool 11/64 3/16 9/32 1-3/8 30° 2 Uncoated Available to Order*
    $8.28
  • A62181 HTC Tool 11/64 3/16 15/32 1-7/16 30° 2 Uncoated Available to Order*
    $8.28
  • A66930 HTC Tool 5/16 3/8 1-1/4 3-5/16 30° 2 TiN Available to Order*
    $20.49
  • A64447 HTC Tool 1/4 3/8 3/4 2-9/16 30° 4 TiALN Available to Order*
    $16.99
  • A62186 HTC Tool 11/64 3/16 9/32 1-3/8 30° 2 TiCN Available to Order*
    $11.37
  • A62182 HTC Tool 11/64 3/16 15/32 1-7/16 30° 2 TiCN Available to Order*
    $11.37
  • A66928 HTC Tool 5/16 3/8 1-1/4 3-5/16 30° 2 TiCN Available to Order*
    $22.14
  • A64429 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 Uncoated Available to Order*
    $14.22
  • A62187 HTC Tool 11/64 3/16 9/32 1-3/8 30° 2 TiALN Available to Order*
    $11.89
  • A62183 HTC Tool 11/64 3/16 15/32 1-7/16 30° 2 TiALN Available to Order*
    $11.89
  • A66929 HTC Tool 5/16 3/8 1-1/4 3-5/16 30° 2 TiALN Available to Order*
    $22.97
  • A64441 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 Uncoated Available to Order*
    $16.54
  • A62188 HTC Tool 11/64 3/16 9/32 1-3/8 30° 2 TiN Available to Order*
    $10.34
  • A62184 HTC Tool 11/64 3/16 15/32 1-7/16 30° 2 TiN Available to Order*
    $10.34
  • A66284 HTC Tool 3/16 3/16 9/32 1-3/8 30° 2 Uncoated Available to Order*
    $8.28
  • A66280 HTC Tool 3/16 3/16 1/2 1-7/16 30° 2 Uncoated Available to Order*
    $8.28
  • A65864 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $10.35
  • A64432 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiN Available to Order*
    $17.52
  • A76730 ACT 3/8 3/8 9/16 2-5/16 30° 2 Uncoated Available to Order*
    $26.01
  • A66285 HTC Tool 3/16 3/16 9/32 1-3/8 30° 2 TiCN Available to Order*
    $11.37
  • A66281 HTC Tool 3/16 3/16 1/2 1-7/16 30° 2 TiCN Available to Order*
    $11.37
  • A64444 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiN Available to Order*
    $19.87
  • A66286 HTC Tool 3/16 3/16 9/32 1-3/8 30° 2 TiALN Available to Order*
    $11.89
  • A66282 HTC Tool 3/16 3/16 1/2 1-7/16 30° 2 TiALN Available to Order*
    $11.89
  • A65867 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiN Available to Order*
    $13.67
  • A64430 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiCN Available to Order*
    $19.17
  • A66287 HTC Tool 3/16 3/16 9/32 1-3/8 30° 2 TiN Available to Order*
    $10.34
  • A66283 HTC Tool 3/16 3/16 1/2 1-7/16 30° 2 TiN Available to Order*
    $10.34
  • A65865 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiCN Available to Order*
    $15.33
  • A64442 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiCN Available to Order*
    $21.51
  • A76675 ACT 3/8 3/8 9/16 2-5/16 30° 2 ALTiN 5
    $33.32
  • A64431 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiALN Available to Order*
    $20.01
  • A65866 HTC Tool 3/8 3/8 9/16 2-5/16 30° 2 TiALN Available to Order*
    $16.16
  • A64443 HTC Tool 1/4 3/8 1-1/4 3-1/8 30° 4 TiALN Available to Order*
    $22.34
  • A65992 HTC Tool 3/8 3/8 3/4 5 35° 2 Uncoated Available to Order*
    $32.96
  • A64425 HTC Tool 1/4 3/8 1-3/4 3-1/2 30° 4 Uncoated Available to Order*
    $17.25
  • A65995 HTC Tool 3/8 3/8 3/4 5 35° 2 TiN Available to Order*
    $40.28
  • A64428 HTC Tool 1/4 3/8 1-3/4 3-1/2 30° 4 TiN Available to Order*
    $20.57

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

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