Variable Index – Corner Radius End Mills

Variable Index – Corner Radius End Mills

4 Flute - Radius
4 Flute - Radius
4 Flute - Chipbreaker - Radius
4 Flute - Chipbreaker - Radius
5 Flute - Radius
5 Flute - Radius
5 Flute - Chipbreaker - Radius
5 Flute - Chipbreaker - Radius
6 FLUTE - Radius
6 FLUTE - Radius
6 Flute - Chipbreaker - Radius
6 Flute - Chipbreaker - Radius
7 Flute - Radius
7 Flute - Radius

Variable index high-performance carbide end mills with a corner radius combine the versatility and reduced vibration of variable index geometry with the added durability of a rounded cutting edge. Available in 4, 5, 6, and 7 flute configurations, with chipbreaker options on 4, 5, and 6 flute styles for improved chip control in heavy roughing.

Reduced Edge Chipping: The corner radius eliminates the sharp 90° corner found on square end tools, distributing cutting forces more evenly and reducing the stress concentration that leads to chipping and premature wear — especially valuable in interrupted cuts and hardened materials.

Variable Index Stability: Uneven flute spacing breaks up harmonic vibration during cutting, producing smoother finishes and allowing more aggressive feeds without chatter.

Longer Tool Life: The combination of variable index geometry and a rounded corner extends usable tool life compared to standard-index square end tools, particularly in roughing and semi-finishing passes on tougher alloys.

  • 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
    A42469 ACT 1/8 1/8 1/2 2 38° 5 No ALCRO-MAX 81
    $23.46
  • A42299 ACT 1/8 1/8 1/2 2 38° 4 No ALCRO-MAX 25
    $20.62
  • A42650 ACT 1/4 1/4 3/8 2 .015 38° 7 No ALCRO-MAX 100
    $35.17
  • A42608 ACT 1/4 1/4 3/4 2-1/2 .015 38° 6 No ALCRO-MAX 80
    $33.90
  • A59675 ACT 1/4 1/4 3/8 2 0.015 38° 5 No ALCRO-MAX 100
    $31.05
  • A59240 ACT 1/4 1/4 3/4 2-1/2 0.02 38° 6 No ALCRO-MAX 52
    $35.59
  • A58673 ACT 1/4 1/4 3/8 2 0.015 38° 4 No ALCRO-MAX 20
    $28.21
  • A42470 ACT 1/8 1/8 1/2 2 38° 5 No ALCRO-MAX 55
    $26.57
  • A42300 ACT 1/8 1/8 1/2 2 38° 4 No ALCRO-MAX 81
    $23.36
  • A42656 ACT 1/4 1/4 3/4 2-1/2 .015 38° 7 No ALCRO-MAX 19
    $39.05
  • A42619 ACT 1/4 1/4 1-1/8 3 .015 38° 6 No ALCRO-MAX 82
    $39.01
  • A59207 ACT 1/4 1/4 1-1/8 3 0.02 38° 6 No ALCRO-MAX 55
    $40.58
  • A59037 ACT 1/4 1/4 3/4 2-1/2 0.015 38° 5 No ALCRO-MAX 73
    $34.18
  • A58769 ACT 1/4 1/4 3/4 2-1/2 0.015 38° 4 No ALCRO-MAX 100
    $31.13
  • A42471 ACT 1/8 1/8 1/2 2 38° 5 No ALCRO-MAX 89
    $26.57
  • A42301 ACT 1/8 1/8 1/2 2 38° 4 No ALCRO-MAX 83
    $23.36
  • A42663 ACT 1/4 1/4 1-1/8 3 .015 38° 7 No ALCRO-MAX 30
    $43.91
  • A42609 ACT 5/16 5/16 13/16 2-1/2 .015 38° 6 No ALCRO-MAX 87
    $44.08
  • A59241 ACT 5/16 5/16 13/16 2-1/2 0.02 38° 6 No ALCRO-MAX 26
    $46.06
  • A59038 ACT 1/4 1/4 3/4 2-1/2 0.03 38° 5 No ALCRO-MAX 100
    $34.18
  • A58770 ACT 1/4 1/4 3/4 2-1/2 0.03 38° 4 No ALCRO-MAX 100
    $31.13
  • A42472 ACT 3/16 3/16 9/16 2 38° 5 No ALCRO-MAX 76
    $31.64
  • A42302 ACT 3/16 3/16 9/16 2 38° 4 No ALCRO-MAX 67
    $26.57
  • A42651 ACT 5/16 5/16 7/16 2 .015 38° 7 No ALCRO-MAX 63
    $47.05
  • A42620 ACT 5/16 5/16 1-1/8 3 .015 38° 6 No ALCRO-MAX 88
    $52.86
  • A59039 ACT 1/4 1/4 3/4 2-1/2 0.06 38° 5 No ALCRO-MAX 23
    $34.18
  • A58771 ACT 1/4 1/4 3/4 2-1/2 0.06 38° 4 No ALCRO-MAX 100
    $31.13
  • A42473 ACT 3/16 3/16 9/16 2 38° 5 No ALCRO-MAX 78
    $27.96
  • A42303 ACT 3/16 3/16 9/16 2 38° 4 No ALCRO-MAX 77
    $23.46
  • A42657 ACT 5/16 5/16 13/16 2-1/2 .015 38° 7 No ALCRO-MAX 100
    $50.18
  • A42610 ACT 3/8 3/8 1 2-1/2 .015 38° 6 No ALCRO-MAX 62
    $51.91
  • A59242 ACT 3/8 3/8 1 2-1/2 0.04 38° 6 No ALCRO-MAX 21
    $54.14
  • A59112 ACT 1/4 1/4 1-1/8 3 0.015 38° 5 No ALCRO-MAX 28
    $38.56
  • A58874 ACT 1/4 1/4 1-1/8 3 0.015 38° 4 No ALCRO-MAX 21
    $35.26
  • A42474 ACT 3/16 3/16 9/16 2 38° 5 No ALCRO-MAX 84
    $31.64
  • A42304 ACT 3/16 3/16 9/16 2 38° 4 No ALCRO-MAX 73
    $26.57
  • A42664 ACT 5/16 5/16 1-1/8 3 .015 38° 7 No ALCRO-MAX 100
    $58.76
  • A42621 ACT 3/8 3/8 1-1/4 3 .015 38° 6 No ALCRO-MAX 84
    $71.83
  • A59209 ACT 3/8 3/8 1-1/4 3 0.04 38° 6 No ALCRO-MAX 12
    $74.01
  • A59113 ACT 1/4 1/4 1-1/8 3 0.03 38° 5 No ALCRO-MAX 100
    $38.56
  • A58875 ACT 1/4 1/4 1-1/8 3 0.03 38° 4 No ALCRO-MAX 68
    $35.26
  • A42475 ACT 1/4 1/4 3/4 2-1/2 38° 5 No ALCRO-MAX 48
    $32.54
  • A42305 ACT 1/4 1/4 3/4 2-1/2 38° 4 No ALCRO-MAX 33
    $29.48
  • A42652 ACT 3/8 3/8 1/2 2 .015 38° 7 No ALCRO-MAX 36
    $51.79
  • A42611 ACT 1/2 1/2 1-1/4 3 .03 38° 6 No ALCRO-MAX 34
    $87.41
  • A59243 ACT 1/2 1/2 1-1/4 3 0.04 38° 6 No ALCRO-MAX 24
    $90.01
  • A59162 ACT 1/4 1/4 1-1/2 4 0.015 38° 5 No ALCRO-MAX 100
    $46.92
  • A58956 ACT 1/4 1/4 1-1/2 4 0.015 38° 4 No ALCRO-MAX 49
    $42.84
  • A42484 ACT 1/4 1/4 1-1/8 3 38° 5 No ALCRO-MAX 76
    $36.95
  • A42317 ACT 1/4 1/4 1-1/8 3 38° 4 No ALCRO-MAX 75
    $33.61
  • A42658 ACT 3/8 3/8 1 2-1/2 .015 38° 7 No ALCRO-MAX 19
    $57.27
  • A42622 ACT 1/2 1/2 2 4 .03 38° 6 No ALCRO-MAX 23
    $121.30
  • A59247 ACT 1/2 1/2 1-1/4 3 0.04 38° 6 Yes ALCRO-MAX 18
    $98.42
  • A59163 ACT 1/4 1/4 1-1/2 4 0.03 38° 5 No ALCRO-MAX 26
    $46.92
  • A58957 ACT 1/4 1/4 1-1/2 4 0.03 38° 4 No ALCRO-MAX 100
    $42.84
  • A42490 ACT 1/4 1/4 1-1/2 4 38° 5 No ALCRO-MAX 79
    $45.23
  • A42325 ACT 1/4 1/4 1-1/2 4 38° 4 No ALCRO-MAX 75
    $41.23
  • A42665 ACT 3/8 3/8 1-1/4 3 .015 38° 7 No ALCRO-MAX 100
    $73.89
  • A42615 ACT 1/2 1/2 1-1/4 3 .03 38° 6 Yes ALCRO-MAX 66
    $115.17
  • A59676 ACT 5/16 5/16 7/16 2 0.015 38° 5 No ALCRO-MAX 100
    $41.65
  • A59210 ACT 1/2 1/2 2 4 0.04 38° 6 No ALCRO-MAX 23
    $123.98
  • A58674 ACT 5/16 5/16 7/16 2 0.015 38° 4 No ALCRO-MAX 85
    $37.94
  • A42476 ACT 1/4 1/4 3/4 2-1/2 38° 5 No ALCRO-MAX 56
    $36.83
  • A42306 ACT 1/4 1/4 3/4 2-1/2 38° 4 No ALCRO-MAX 51
    $33.40
  • A42653 ACT 1/2 1/2 5/8 2-1/2 .03 38° 7 No ALCRO-MAX 26
    $86.34
  • A42626 ACT 1/2 1/2 2 4 .03 38° 6 Yes ALCRO-MAX 69
    $156.02
  • A59214 ACT 1/2 1/2 2 4 0.04 38° 6 Yes ALCRO-MAX 17
    $132.31
  • A59040 ACT 5/16 5/16 13/16 2-1/2 0.015 38° 5 No ALCRO-MAX 10
    $44.45
  • A58772 ACT 5/16 5/16 13/16 2-1/2 0.015 38° 4 No ALCRO-MAX 61
    $40.16
  • A42485 ACT 1/4 1/4 1-1/8 3 38° 5 No ALCRO-MAX 83
    $41.81
  • A42318 ACT 1/4 1/4 1-1/8 3 38° 4 No ALCRO-MAX 83
    $38.04
  • A42659 ACT 1/2 1/2 1-1/4 3 .03 38° 7 No ALCRO-MAX 53
    $100.81
  • A42612 ACT 5/8 5/8 1-5/8 3-1/2 .03 38° 6 No ALCRO-MAX 21
    $165.58
  • A59244 ACT 5/8 5/8 1-5/8 3-1/2 0.04 38° 6 No ALCRO-MAX 19
    $168.35
  • A59041 ACT 5/16 5/16 13/16 2-1/2 0.03 38° 5 No ALCRO-MAX 79
    $44.45
  • A58773 ACT 5/16 5/16 13/16 2-1/2 0.03 38° 4 No ALCRO-MAX 15
    $40.16
  • A42491 ACT 1/4 1/4 1-1/2 4 38° 5 No ALCRO-MAX 83
    $51.22
  • A42326 ACT 1/4 1/4 1-1/2 4 38° 4 No ALCRO-MAX 88
    $46.71
  • A42666 ACT 1/2 1/2 2 4 .03 38° 7 No ALCRO-MAX 100
    $128.73
  • A42623 ACT 5/8 5/8 2-1/4 5 .03 38° 6 No ALCRO-MAX 55
    $226.98
  • A59248 ACT 5/8 5/8 1-5/8 3-1/2 0.04 38° 6 Yes ALCRO-MAX 33
    $179.52
  • A59042 ACT 5/16 5/16 13/16 2-1/2 0.06 38° 5 No ALCRO-MAX 1
    $44.45
  • A58774 ACT 5/16 5/16 13/16 2-1/2 0.06 38° 4 No ALCRO-MAX 100
    $40.16
  • A42477 ACT 1/4 1/4 3/4 2-1/2 38° 5 No ALCRO-MAX 70
    $36.83
  • A42307 ACT 1/4 1/4 3/4 2-1/2 38° 4 No ALCRO-MAX 65
    $33.40
  • A42654 ACT 5/8 5/8 3/4 3 .03 38° 7 No ALCRO-MAX 100
    $164.35
  • A42616 ACT 5/8 5/8 1-5/8 3-1/2 .03 38° 6 Yes ALCRO-MAX Available to Order*
    $218.92
  • A59211 ACT 5/8 5/8 2-1/4 5 0.04 38° 6 No ALCRO-MAX 29
    $229.78
  • A59114 ACT 5/16 5/16 1-1/8 3 0.015 38° 5 No ALCRO-MAX 20
    $52.61
  • A58876 ACT 5/16 5/16 1-1/8 3 0.015 38° 4 No ALCRO-MAX 100
    $47.79
  • A42478 ACT 5/16 5/16 13/16 2-1/2 38° 5 No ALCRO-MAX 24
    $42.43
  • A42308 ACT 5/16 5/16 13/16 2-1/2 38° 4 No ALCRO-MAX 72
    $38.14
  • A42660 ACT 5/8 5/8 1-5/8 3-1/2 .03 38° 7 No ALCRO-MAX 21
    $201.00
  • A42627 ACT 5/8 5/8 2-1/4 5 .03 38° 6 Yes ALCRO-MAX 15
    $294.96
  • A59215 ACT 5/8 5/8 2-1/4 5 0.04 38° 6 Yes ALCRO-MAX 64
    $240.91
  • A59115 ACT 5/16 5/16 1-1/8 3 0.03 38° 5 No ALCRO-MAX 24
    $52.61
  • A58877 ACT 5/16 5/16 1-1/8 3 0.03 38° 4 No ALCRO-MAX 42
    $47.79
  • A42486 ACT 5/16 5/16 1-1/8 3 38° 5 No ALCRO-MAX 88
    $50.68
  • A42667 ACT 5/8 5/8 2-1/4 5 .03 38° 7 No ALCRO-MAX 22
    $247.80
  • A42613 ACT 3/4 3/4 1-5/8 4 .06 38° 6 No ALCRO-MAX 13
    $219.51

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

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