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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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    Key Filters
    Workpiece Material
    Workpiece Material
    • P Steel (270)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(270)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(270)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(270)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(270)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(270)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(270)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(270)
    • M Stainless Steel (348)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(348)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(348)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(348)
    • K Cast Iron (188)
      • K1
        Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(188)
      • K2
        Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(188)
      • K3
        High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(188)
    • N Non-Ferrous Materials (264)
      • N1
        Wrought Aluminum (264)
      • N2
        Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%(227)
      • N4
        Copper, Brass, Zinc-based on machinability index range of 70-100 (264)
      • N5
        Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (227)
      • N6
        Carbon, Graphite Composites, CFRP (227)
    • S High-Temp Alloys (365)
      • S1
        Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(365)
      • S2
        Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(365)
      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(365)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(365)
    • H Hardened Materials (97)
      • H1
        Hardened Materials 44-48 HRC(97)
    Applications
    Applications
    • Back BoringBack Boring (104)
    • BoringBoring (104)
    • Face GroovingFace Grooving (412)
    • FacingFacing (104)
    • GroovingGrooving (412)
    • ID FacingID Facing (104)
    • ID GroovingID Grooving (328)
    • Plunge TurningPlunge Turning (224)
    • ProfilingProfiling (188)
    • TurningTurning (104)
    Cutting Condition
    Cutting Condition
    • Heavily Interrupted Cut (280)
    • Lightly Interrupted Cut (312)
    • Smooth Cut (334)
    • Varying Depth of Cut (362)
    Cutting Edges Per Insert
    Cutting Edges Per Insert
    • 1.0 (42)
    • 2.0 (370)
    Cutting Edges Per Insert MintoCutting Edges Per Insert Max
    Corner configuration
    Corner Radius
    Corner Radius
    • 0.02 in(11)
    • 0.03 in(3)
    • 0.031 in(81)
    • 0.039 in(12)
    • 0.047 in(54)
    • 0.049 in(2)
    • 0.059 in(11)
    • 0.062 in(18)
    • 0.063 in(94)
    • 0.069 in(2)
    • 0.078 in(19)
    • 0.079 in(4)
    • 0.094 in(58)
    • 0.098 in(1)
    • 0.125 in(42)
    Corner Radius MintoCorner Radius Max
    Corner Radius
    Corner Radius
    • 0.5 mm(11)
    • 0.75 mm(3)
    • 0.775 mm(81)
    • 1.0 mm(12)
    • 1.2 mm(54)
    • 1.25 mm(2)
    • 1.5 mm(11)
    • 1.575 mm(18)
    • 1.6 mm(94)
    • 1.75 mm(2)
    • 1.975 mm(19)
    • 2.0 mm(4)
    • 2.4 mm(58)
    • 2.5 mm(1)
    • 3.175 mm(42)
    Corner Radius MintoCorner Radius Max
    Application
    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)
    • KC5025 (36)
    • KC730 (50)
    • KC850 (41)
    • KCK20 (2)
    • KCU10 (46)
    • KCU10B (51)
    • KCU25 (41)
    • KCU25B (53)
    Minimum Axial Groove Diameter
    Minimum Axial Groove Diameter
    • 88.9 mm(55)
    • 139.7 mm(210)
    • 209.6 mm(94)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Minimum Axial Groove Diameter
    Minimum Axial Groove Diameter
    • 3.5 in(55)
    • 5.5 in(210)
    • 8.252 in(94)
    Minimum Axial Groove Diameter MintoMinimum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 393.661 in(359)
    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Maximum Axial Groove Diameter
    Maximum Axial Groove Diameter
    • 9999.0 mm(359)
    Maximum Axial Groove Diameter MintoMaximum Axial Groove Diameter Max
    Front-End
    Cutting Width
    Cutting Width
    • 0.0394 in(11)
    • 0.0591 in(3)
    • 0.062 in(81)
    • 0.0787 in(12)
    • 0.094 in(54)
    • 0.0984 in(2)
    • 0.1181 in(11)
    • 0.125 in(112)
    • 0.1378 in(2)
    • 0.156 in(19)
    • 0.1574 in(4)
    • 0.188 in(58)
    • 0.1969 in(1)
    • 0.25 in(42)
    Cutting Width MintoCutting Width Max
    Cutting Width
    Cutting Width
    • 1.0 mm(11)
    • 1.5 mm(3)
    • 1.57 mm(6)
    • 1.575 mm(75)
    • 2.0 mm(12)
    • 2.388 mm(52)
    • 2.39 mm(2)
    • 2.5 mm(2)
    • 3.0 mm(11)
    • 3.17 mm(18)
    • 3.175 mm(86)
    • 3.18 mm(8)
    • 3.5 mm(2)
    • 3.96 mm(5)
    • 3.962 mm(13)
    • 3.974 mm(1)
    • 4.0 mm(4)
    • 4.775 mm(41)
    • 4.78 mm(4)
    • 4.785 mm(6)
    • 4.788 mm(7)
    • 5.0 mm(1)
    • 6.35 mm(37)
    • 6.36 mm(5)
    Cutting Width MintoCutting Width Max
    Maximum Cutting Insert Depth
    Maximum Cutting Insert Depth
    • 1.905 mm(1)
    • 1.97 mm(6)
    • 1.981 mm(6)
    • 2.54 mm(11)
    • 2.921 mm(26)
    • 3.81 mm(40)
    Maximum Cutting Insert Depth MintoMaximum Cutting Insert Depth Max
    Maximum Cutting Insert Depth
    Maximum Cutting Insert Depth
    • 0.075 in(1)
    • 0.078 in(12)
    • 0.1 in(11)
    • 0.115 in(26)
    • 0.15 in(40)
    Maximum Cutting Insert Depth MintoMaximum Cutting Insert Depth Max
    Insert Geometry
    Insert Seat Size
    Insert Seat Size
    • 2 (69)
    • 3 (236)
    • 4 (107)
    No filters matching ""
    Top Notch™ Inserts
    NRD • Groove and Turn • Deep Grooving • Full Radius • Flat Top
    (42)

    NRD • Groove and Turn • Deep Grooving • Full Radius • Flat Top

    NR • Groove and Turn • Full Radius • Flat Top
    (198)

    NR • Groove and Turn • Full Radius • Flat Top

    NRD-DBL • Groove and Turn • Deep Grooving • Full Radius • Double Ended • Flat Top
    (34)

    NRD-DBL • Groove and Turn • Deep Grooving • Full Radius • Double Ended • Flat Top

    NR-K • Groove and Turn • Full Radius • Chip Control
    (90)

    NR-K • Groove and Turn • Full Radius • Chip Control

    NRP • Groove and Turn • Full Radius • Positive
    (48)

    NRP • Groove and Turn • Full Radius • Positive

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