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 (226)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (226)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (226)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS (226)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS (226)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS (226)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS (226)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (226)
  • M Stainless Steel (224)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS (224)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS (224)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS (224)
  • K Cast Iron (176)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS (176)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS (176)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS (176)
  • N Non-Ferrous Materials (211)
    • N1
      Wrought Aluminum (211)
    • N2
      Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2% (174)
    • N4
      Copper, Brass, Zinc-based on machinability index range of 70-100 (211)
    • N5
      Nylon, Plastics, Rubbers, Phenolics, Resins, Fiberglass (174)
    • N6
      Carbon, Graphite Composites, CFRP (174)
  • S High-Temp Alloys (261)
    • S1
      Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS (261)
    • S2
      Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS (261)
    • S3
      Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS (261)
    • S4
      Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS (261)
  • H Hardened Materials (97)
    • H1
      Hardened Materials 44-48 HRC (97)
    • H2
      Hardened Materials 48-55 HRC (46)
Applications
Applications
  • Face Grooving Face Grooving (308)
  • Grooving Grooving (308)
  • ID Grooving ID Grooving (224)
  • Plunge Turning Plunge Turning (224)
  • Profiling Profiling (84)
Cutting Condition
Cutting Condition
  • Heavily Interrupted Cut (176)
  • Lightly Interrupted Cut (180)
  • Smooth Cut (217)
  • Varying Depth of Cut (217)
Cutting Edges Per Insert
Cutting Edges Per Insert
  • 1.0 (31)
  • 2.0 (277)
Cutting Edges Per Insert Min to Cutting Edges Per Insert Max
Corner configuration
Corner Radius
Corner Radius
  • 0.02 in (7)
  • 0.03 in (2)
  • 0.031 in (63)
  • 0.039 in (7)
  • 0.047 in (42)
  • 0.049 in (1)
  • 0.06 in (6)
  • 0.062 in (14)
  • 0.063 in (72)
  • 0.069 in (1)
  • 0.078 in (15)
  • 0.079 in (2)
  • 0.095 in (45)
  • 0.098 in (1)
  • 0.125 in (30)
Corner Radius Min to Corner Radius Max
Corner Radius
Corner Radius
  • 0.5 mm (7)
  • 0.75 mm (2)
  • 0.775 mm (63)
  • 1.0 mm (7)
  • 1.201 mm (42)
  • 1.25 mm (1)
  • 1.5 mm (6)
  • 1.576 mm (14)
  • 1.6 mm (72)
  • 1.75 mm (1)
  • 1.975 mm (15)
  • 2.0 mm (2)
  • 2.401 mm (45)
  • 2.5 mm (1)
  • 3.176 mm (30)
Corner Radius Min to Corner 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)
  • KCU25 (41)
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
  • 88.9 mm (47)
  • 139.701 mm (181)
  • 209.601 mm (80)
Minimum Axial Groove Diameter Min to Minimum Axial Groove Diameter Max
Minimum Axial Groove Diameter
Minimum Axial Groove Diameter
  • 3.5 in (47)
  • 5.5 in (181)
  • 8.252 in (80)
Minimum Axial Groove Diameter Min to Minimum Axial Groove Diameter Max
Front-End
Cutting Width
Cutting Width
  • 0.039 in (7)
  • 0.06 in (2)
  • 0.062 in (63)
  • 0.079 in (7)
  • 0.095 in (42)
  • 0.098 in (1)
  • 0.119 in (6)
  • 0.125 in (86)
  • 0.138 in (1)
  • 0.156 in (15)
  • 0.157 in (2)
  • 0.188 in (40)
  • 0.189 in (5)
  • 0.197 in (1)
  • 0.25 in (30)
Cutting Width Min to Cutting Width Max
Cutting Width
Cutting Width
  • 1.0 mm (7)
  • 1.5 mm (2)
  • 1.576 mm (63)
  • 2.0 mm (7)
  • 2.401 mm (42)
  • 2.5 mm (1)
  • 3.0 mm (6)
  • 3.176 mm (86)
  • 3.5 mm (1)
  • 3.95 mm (11)
  • 3.975 mm (4)
  • 4.0 mm (2)
  • 4.775 mm (40)
  • 4.801 mm (5)
  • 5.0 mm (1)
  • 6.351 mm (30)
Cutting Width Min to Cutting Width Max
Maximum Cutting Insert Depth
Maximum Cutting Insert Depth
  • 1.901 mm (6)
  • 1.975 mm (8)
  • 2.551 mm (7)
  • 2.926 mm (18)
  • 3.801 mm (23)
Maximum Cutting Insert Depth Min to Maximum Cutting Insert Depth Max
Maximum Cutting Insert Depth
Maximum Cutting Insert Depth
  • 0.075 in (6)
  • 0.078 in (8)
  • 0.1 in (7)
  • 0.115 in (18)
  • 0.15 in (23)
Maximum Cutting Insert Depth Min to Maximum Cutting Insert Depth Max
Insert Geometry
Insert Seat Size
Insert Seat Size
  • 2 (47)
  • 3 (181)
  • 4 (80)
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