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
    A66704 HTC Tool 5/8 5/8 2-1/2 4-5/8 30° 4 TiCN Available to Order*
    $43.86
  • A60678 HTC Tool 1 1 3 5-1/2 30° 2 TiCN Available to Order*
    $78.74
  • A66685 HTC Tool 5/8 5/8 2-1/2 4-5/8 30° 4 TiALN Available to Order*
    $40.57
  • A60679 HTC Tool 1 1 3 5-1/2 30° 2 TiALN Available to Order*
    $82.15
  • A76668 ACT 1-1/8 1-1/8 1-5/8 4-1/8 30° 2 Uncoated 6
    $138.57
  • A66702 HTC Tool 5/8 5/8 2-1/2 4-5/8 30° 6 TiALN Available to Order*
    $45.75
  • A76693 ACT 1-1/8 1-1/8 1-5/8 4-1/8 30° 2 ALTiN 7
    $115.94
  • A66705 HTC Tool 5/8 5/8 2-1/2 4-5/8 30° 4 TiALN Available to Order*
    $45.75
  • A66679 HTC Tool 5/8 5/8 4 6-1/8 30° 4 Uncoated Available to Order*
    $34.29
  • A63413 HTC Tool 1-1/8 1 2 10-1/4 35° 2 Uncoated Available to Order*
    $163.03
  • A66691 HTC Tool 5/8 5/8 4 6-1/8 30° 4 Uncoated Available to Order*
    $38.99
  • A63416 HTC Tool 1-1/8 1 2 10-1/4 35° 2 TiN Available to Order*
    $186.54
  • A66692 HTC Tool 5/8 5/8 4 6-1/8 30° 6 Uncoated Available to Order*
    $44.94
  • A63414 HTC Tool 1-1/8 1 2 10-1/4 35° 2 TiCN Available to Order*
    $198.29
  • A66682 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiN Available to Order*
    $44.16
  • A63415 HTC Tool 1-1/8 1 2 10-1/4 35° 2 TiALN Available to Order*
    $204.17
  • A66695 HTC Tool 5/8 5/8 4 6-1/8 30° 6 TiN Available to Order*
    $54.81
  • A62981 HTC Tool 1-1/4 3/4 1-1/2 3-3/4 30° 2 Uncoated Available to Order*
    $67.27
  • A66698 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiN Available to Order*
    $48.86
  • A62984 HTC Tool 1-1/4 3/4 1-1/2 3-3/4 30° 2 TiN Available to Order*
    $81.62
  • A66680 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiCN Available to Order*
    $49.11
  • A62982 HTC Tool 1-1/4 3/4 1-1/2 3-3/4 30° 2 TiCN Available to Order*
    $88.80
  • A66693 HTC Tool 5/8 5/8 4 6-1/8 30° 6 TiCN Available to Order*
    $59.73
  • A62983 HTC Tool 1-1/4 3/4 1-1/2 3-3/4 30° 2 TiALN Available to Order*
    $92.38
  • A66696 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiCN Available to Order*
    $53.78
  • A62977 HTC Tool 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 Uncoated Available to Order*
    $66.50
  • A76669 ACT 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 Uncoated 15
    $161.66
  • A66681 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiALN Available to Order*
    $51.59
  • A66694 HTC Tool 5/8 5/8 4 6-1/8 30° 6 TiALN Available to Order*
    $62.21
  • A62980 HTC Tool 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 TiN Available to Order*
    $82.47
  • A66697 HTC Tool 5/8 5/8 4 6-1/8 30° 4 TiALN Available to Order*
    $56.26
  • A62978 HTC Tool 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 TiCN Available to Order*
    $90.48
  • A76851 ACT 11/16 11/16 1-5/8 3-5/8 30° 4 Uncoated 7
    $58.55
  • A76694 ACT 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 ALTiN 10
    $191.88
  • A76888 ACT 11/16 11/16 1-5/8 3-5/8 30° 4 ALTiN 13
    $69.56
  • A62979 HTC Tool 1-1/4 1-1/4 1-5/8 4-1/8 30° 2 TiALN Available to Order*
    $94.46
  • A76852 ACT 11/16 11/16 1-5/8 3-3/4 30° 4 Uncoated 28
    $60.20
  • A62969 HTC Tool 1-1/4 1-1/4 2-1/4 4-3/4 30° 2 Uncoated Available to Order*
    $81.20
  • A76889 ACT 11/16 11/16 1-5/8 3-3/4 30° 4 ALTiN 11
    $71.45
  • A62972 HTC Tool 1-1/4 1-1/4 2-1/4 4-3/4 30° 2 TiN Available to Order*
    $97.17
  • A76853 ACT 3/4 3/4 1-5/8 3-5/8 30° 4 Uncoated 2
    $83.40
  • A62970 HTC Tool 1-1/4 1-1/4 2-1/4 4-3/4 30° 2 TiCN Available to Order*
    $105.18
  • A76890 ACT 3/4 3/4 1-5/8 3-5/8 30° 4 ALTiN 9
    $84.36
  • A62971 HTC Tool 1-1/4 1-1/4 2-1/4 4-3/4 30° 2 TiALN Available to Order*
    $109.16
  • A76854 ACT 3/4 3/4 1-5/8 3-3/4 30° 4 Uncoated 18
    $83.40
  • A62965 HTC Tool 1-1/4 1 3 5-1/2 30° 2 Uncoated Available to Order*
    $96.33
  • A76891 ACT 3/4 3/4 1-5/8 3-3/4 30° 4 ALTiN 18
    $84.36
  • A62973 HTC Tool 1-1/4 1-1/4 3 5-1/2 30° 2 Uncoated Available to Order*
    $96.33
  • A65432 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 Uncoated Available to Order*
    $25.26
  • A62968 HTC Tool 1-1/4 1 3 5-1/2 30° 2 TiN Available to Order*
    $113.97
  • A65460 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 Uncoated Available to Order*
    $28.42
  • A62976 HTC Tool 1-1/4 1-1/4 3 5-1/2 30° 2 TiN Available to Order*
    $113.97
  • A65461 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 Uncoated Available to Order*
    $31.07
  • A62966 HTC Tool 1-1/4 1 3 5-1/2 30° 2 TiCN Available to Order*
    $122.80
  • A76855 ACT 3/4 3/4 1-5/8 3-7/8 30° 4 Uncoated 21
    $70.88
  • A62974 HTC Tool 1-1/4 1-1/4 3 5-1/2 30° 2 TiCN Available to Order*
    $122.80
  • A65435 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiN Available to Order*
    $34.18
  • A62967 HTC Tool 1-1/4 1 3 5-1/2 30° 2 TiALN Available to Order*
    $127.20
  • A65464 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiN Available to Order*
    $39.97
  • A62975 HTC Tool 1-1/4 1-1/4 3 5-1/2 30° 2 TiALN Available to Order*
    $127.20
  • A65467 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiN Available to Order*
    $37.33
  • A62417 HTC Tool 1-1/2 3/4 1-1/2 3-3/4 30° 2 Uncoated Available to Order*
    $95.28
  • A65433 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiCN Available to Order*
    $38.62
  • A62420 HTC Tool 1-1/2 3/4 1-1/2 3-3/4 30° 2 TiN Available to Order*
    $112.71
  • A65462 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiCN Available to Order*
    $44.44
  • A62418 HTC Tool 1-1/2 3/4 1-1/2 3-3/4 30° 2 TiCN Available to Order*
    $121.42
  • A65465 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiCN Available to Order*
    $41.79
  • A62419 HTC Tool 1-1/2 3/4 1-1/2 3-3/4 30° 2 TiALN Available to Order*
    $125.78
  • A76892 ACT 3/4 3/4 1-5/8 3-7/8 30° 4 ALTiN 25
    $84.23
  • A62413 HTC Tool 1-1/2 1-1/4 1-5/8 4-1/8 30° 2 Uncoated Available to Order*
    $88.97
  • A76670 ACT 1-1/2 1-1/2 1-5/8 4-1/8 30° 2 Uncoated 2
    $196.83
  • A65434 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiALN Available to Order*
    $40.83
  • A65463 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 6 TiALN Available to Order*
    $46.65
  • A62416 HTC Tool 1-1/2 1-1/4 1-5/8 4-1/8 30° 2 TiN Available to Order*
    $108.09
  • A65466 HTC Tool 3/4 3/4 1-5/8 3-7/8 30° 4 TiALN Available to Order*
    $44.02
  • A62414 HTC Tool 1-1/2 1-1/4 1-5/8 4-1/8 30° 2 TiCN Available to Order*
    $117.65
  • A76695 ACT 1-1/2 1-1/2 1-5/8 4-1/8 30° 2 ALTiN 4
    $232.42
  • A65452 HTC Tool 3/4 3/4 2 4-1/4 30° 4 Uncoated Available to Order*
    $36.84
  • A65453 HTC Tool 3/4 3/4 2 4-1/4 30° 6 Uncoated Available to Order*
    $36.84
  • A62415 HTC Tool 1-1/2 1-1/4 1-5/8 4-1/8 30° 2 TiALN Available to Order*
    $122.43
  • A65456 HTC Tool 3/4 3/4 2 4-1/4 30° 6 TiN Available to Order*
    $45.76
  • A62409 HTC Tool 1-1/2 1-1/4 3 5-1/2 30° 2 Uncoated Available to Order*
    $124.11
  • A65459 HTC Tool 3/4 3/4 2 4-1/4 30° 4 TiN Available to Order*
    $45.76
  • A62412 HTC Tool 1-1/2 1-1/4 3 5-1/2 30° 2 TiN Available to Order*
    $144.96
  • A65454 HTC Tool 3/4 3/4 2 4-1/4 30° 6 TiCN Available to Order*
    $50.20
  • A62410 HTC Tool 1-1/2 1-1/4 3 5-1/2 30° 2 TiCN Available to Order*
    $155.40
  • A65457 HTC Tool 3/4 3/4 2 4-1/4 30° 4 TiCN Available to Order*
    $50.20
  • A62411 HTC Tool 1-1/2 1-1/4 3 5-1/2 30° 2 TiALN Available to Order*
    $160.61
  • A65455 HTC Tool 3/4 3/4 2 4-1/4 30° 6 TiALN Available to Order*
    $52.43
  • A61089 HTC Tool 2 3/4 1-5/8 3-7/8 30° 2 Uncoated Available to Order*
    $118.62
  • A65458 HTC Tool 3/4 3/4 2 4-1/4 30° 4 TiALN Available to Order*
    $52.43
  • A61092 HTC Tool 2 3/4 1-5/8 3-7/8 30° 2 TiN Available to Order*
    $170.11
  • A65428 HTC Tool 3/4 3/4 3 5-1/4 30° 4 Uncoated Available to Order*
    $31.07
  • A61090 HTC Tool 2 3/4 1-5/8 3-7/8 30° 2 TiCN Available to Order*
    $195.86
  • A65444 HTC Tool 3/4 3/4 3 5-1/4 30° 4 Uncoated Available to Order*
    $36.35
  • A61091 HTC Tool 2 3/4 1-5/8 3-7/8 30° 2 TiALN Available to Order*
    $208.73
  • A65445 HTC Tool 3/4 3/4 3 5-1/4 30° 6 Uncoated Available to Order*
    $42.13
  • A61085 HTC Tool 2 1-1/4 1-5/8 4-1/8 30° 2 Uncoated Available to Order*
    $118.62
  • A65431 HTC Tool 3/4 3/4 3 5-1/4 30° 4 TiN Available to Order*
    $41.08
  • A61088 HTC Tool 2 1-1/4 1-5/8 4-1/8 30° 2 TiN Available to Order*
    $147.42

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

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