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    The M640 platform is the first choice when low cutting forces are required

    The M640 platform is the first choice when high productivity, superior finish, and soft cutting performance are a priority. Featuring six effective cutting edges and a streamlined body design, this easy-to-use tool is ideal even for low-power machines.

    • High positive rake angle provides extremely low cutting forces.
    • Easy to use for fast and accurate indexing.
    • Through tool coolant
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      • P Steel (28)
        • P0
          Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(24)
        • P1
          Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(28)
        • P2
          Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(28)
        • P3
          Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(28)
        • P4
          Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(28)
        • P5
          Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(28)
        • P6
          High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(28)
      • M Stainless Steel (28)
        • M1
          Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(28)
        • M2
          High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(28)
        • M3
          Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(28)
      • K Cast Iron (27)
        • K1
          Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(27)
        • K2
          Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(26)
        • K3
          High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(26)
      • N Non-Ferrous Materials (15)
        • N1
          Wrought Aluminum (15)
        • N2
          Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(15)
        • N3
          High-Silicon Aluminum Alloys Si >12.2%(15)
      • S High-Temp Alloys (24)
        • S1
          Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(24)
        • S2
          Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(24)
        • S3
          Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(24)
        • S4
          Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(24)
      • H Hardened Materials (14)
        • H1
          Hardened Materials 44-48 HRC(14)
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      • CN (12)
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      • Face MillingFace Milling (9)
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      Cutting Diameter
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      Maximum Cutting Diameter
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      • 56.401 mm(1)
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      • 82.575 mm(1)
      • 86.4 mm(1)
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      • 131.4 mm(1)
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      • 3.251 in(1)
      • 3.402 in(1)
      • 4.189 in(2)
      • 5.173 in(1)
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      Cutting Length
      • 4.801 mm(7)
      • 4.875 mm(2)
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      Cutting Length
      Cutting Length
      • 0.189 in(7)
      • 0.192 in(2)
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      • 1.575 in(3)
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      Reach
      • 38.1 mm(1)
      • 40.0 mm(3)
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      • 63.0 mm(1)
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      Tool Cutting Edge Angle
      Tool Cutting Edge Angle
      • 58.0 (9)
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      Connection Style
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      • A-Socket Head Cap Screw (4)
      • B-Cutter Retention Screw (4)
      • Weldon (1)
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      Number of Flutes
      • 10 (1)
      • 4 (2)
      • 5 (2)
      • 6 (1)
      • 7 (2)
      • 8 (1)
      Cutting Edges Per Insert
      Cutting Edges Per Insert
      • 3.0 (15)
      • 6.0 (30)
      Cutting Edges Per Insert MintoCutting Edges Per Insert Max
      Internal Coolant Capability
      Internal Coolant Capability
      Over All Length [L]
      Over All Length [L]
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      Corner Radius
      • 0.035 in(11)
      • 0.038 in(34)
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      Corner Radius
      Corner Radius
      • 0.9 mm(11)
      • 0.976 mm(34)
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      Grade Of Cutting Tool
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      • N (20)
      • Y (7)
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      Neck Diameter
      Neck Diameter
      • 0.976 in(1)
      Neck Diameter MintoNeck Diameter Max
      Neck Diameter
      Neck Diameter
      • 24.8 mm(1)
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      • H-HEXAGON 120 (27)
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      Insert IC Size
      • 10.9 mm(5)
      • 10.976 mm(14)
      • 11.0 mm(2)
      • 11.15 mm(6)
      Insert IC Size MintoInsert IC Size Max
      Insert IC Size
      Insert IC Size
      • 0.429 in(5)
      • 0.432 in(14)
      • 0.433 in(2)
      • 0.439 in(6)
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      Chip Breaker CBMD
      Chip Breaker CBMD
      • GD (20)
      • LD (7)
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      • H W (27)
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      • G (21)
      • P (6)
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      Connection Type
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      • CYLINDRICAL (1)
      • SHELL MILL (8)
      Back-End Diameter
      Back-End Diameter
      • 19.05 mm(1)
      • 22.0 mm(2)
      • 25.401 mm(1)
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      Back-End Diameter
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      M640 Series - Tool Bodies
      (9)

      M640 Series - Tool Bodies

      M640 Series - Inserts
      (27)

      M640 Series - Inserts

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