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Top Notch™ Inserts

If you are tired of downtime and tool damage, it is time to upgrade to Kennametal Top Notch inserts. These grooving and cut-off inserts are designed to increase stability in rapid-feed applications. Available in various styles, Kennametal Top Notch grooving inserts resist wear and tear, giving you accurate and consistent cuts with all workpiece materials.

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    Workpiece Material
    Workpiece Material
    • P Steel (336)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(336)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(336)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(336)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(336)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(336)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(336)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(336)
    • M Stainless Steel (334)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(334)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(334)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(334)
    • K Cast Iron (245)
      • K1
        Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(245)
      • K2
        Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(245)
      • K3
        High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(245)
    • N Non-Ferrous Materials (280)
      • N1
        Wrought Aluminum (280)
      • N2
        Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(243)
      • N4
        Copper, Brass, Zinc-based on machinability index range of 70-100 (280)
      • N5
        Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (243)
      • N6
        Carbon, Graphite Composites, CFRP (243)
    • S High-Temp Alloys (330)
      • S1
        Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(330)
      • S2
        Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(330)
      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(330)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(330)
    • H Hardened Materials (115)
      • H1
        Hardened Materials 44-48 HRC(115)
      • H2
        Hardened Materials 48-55 HRC(64)
    Applications
    Applications
    • Back BoringBack Boring (69)
    • BoringBoring (69)
    • Cut-OffCut-Off (51)
    • Face GroovingFace Grooving (377)
    • FacingFacing (69)
    • GroovingGrooving (377)
    • ID FacingID Facing (69)
    • ID GroovingID Grooving (293)
    • Plunge TurningPlunge Turning (224)
    • ProfilingProfiling (153)
    • TurningTurning (69)
    Cutting Condition
    Cutting Condition
    • Heavily Interrupted Cut (176)
    • Lightly Interrupted Cut (208)
    • Smooth Cut (230)
    • Varying Depth of Cut (258)
    Cutting Edges Per Insert
    Cutting Edges Per Insert
    • 1.0 (42)
    • 2.0 (335)
    Cutting Edges Per Insert MintoCutting Edges Per Insert Max
    Corner configuration
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    Corner Radius
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    • 0.5 mm(9)
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    • 1.0 mm(11)
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    • 1.5 mm(10)
    • 1.576 mm(18)
    • 1.6 mm(86)
    • 1.75 mm(2)
    • 1.975 mm(17)
    • 2.0 mm(3)
    • 2.401 mm(54)
    • 2.5 mm(1)
    • 3.176 mm(37)
    Corner Radius MintoCorner Radius Max
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    Minimum Depth of Cut
    Minimum Depth of Cut
    Minimum Feed
    Minimum Feed
    Grade Of Cutting Tool
    Grade Of Cutting Tool
    • K313 (10)
    • K420 (4)
    • K68 (27)
    • KC5010 (51)
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    • KC850 (41)
    • KCK20 (2)
    • KCU10 (46)
    • KCU10B (18)
    • KCU25 (41)
    • KCU25B (51)
    Minimum Axial Groove Diameter
    Minimum Axial Groove Diameter
    • 88.9 mm(47)
    • 139.701 mm(193)
    • 209.601 mm(86)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Minimum Axial Groove Diameter
    Minimum Axial Groove Diameter
    • 3.5 in(47)
    • 5.5 in(193)
    • 8.252 in(86)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 393.661 in(326)
    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 9999.0 mm(326)
    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Front-End
    Cutting Width
    Cutting Width
    • 0.039 in(9)
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    • 0.188 in(48)
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    • 4.775 mm(48)
    • 4.801 mm(6)
    • 5.0 mm(1)
    • 6.351 mm(37)
    Cutting Width MintoCutting Width Max
    Maximum Cutting Insert Depth
    Maximum Cutting Insert Depth
    • 1.901 mm(7)
    • 1.975 mm(10)
    • 2.551 mm(9)
    • 2.926 mm(22)
    • 3.801 mm(28)
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    • 0.075 in(7)
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    • 0.1 in(9)
    • 0.115 in(22)
    • 0.15 in(28)
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    Insert Geometry
    Insert Seat Size
    Insert Seat Size
    • 2 (61)
    • 3 (218)
    • 4 (98)
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    NRD ● Double Ended Insert
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