Product Suggestions

Product Family suggestions

Quick Order Page
successfully added to cart
View Cart

Notifications

Mark all as read
Mobile Menu

Flexible and Versatile

Top Cut 4 indexable drills are equipped with centering capabilities and inboard and outboard inserts delivering outstanding flexibility and versatility in multiple materials. This indexable drill portfolio encompasses dual four-edged front inserts, instead of a traditional drill point geometry, enabling it to perform in a variety of applications on multiple materials. This drill is capable of supporting a variety of applications including through and cross-hole, inclined entry and exit, 45-degree corner, half cylindrical, concave, blind, and chain drilling.

WIDIA All-Star-Logo CMYK png

Top Cut 4 is an All-Star tool. 

Order tools with same-day shipping with All-Star! Learn more.

Four Chip Breakers in Four Grades

V34

Top Cut 4 V36 WN10PH Center Insert

First choice for machining steel, cast iron and short chipping materials. Suitable for severe cutting conditions.

V36

Top Cut 4 V36 WN10PH Center Insert

This insert is suitable for situations with low power consumption. First choice for universal use.

V38

Insert Image of a 4@4x

First choice for long chipping materials in titanium and stainless steel.

DU

Top Cut 4 V36 WN10PH Center Insert

First choice for low-powered applications, machining of steel, cast iron and stainless steel.

Features and Benefits:

  • Standard diameter range covering 12-68mm
  • 4 real cutting edges per insert
  • 4 grades to achieve higher tool life at accelerated speeds: WU25CH, WU40PH, WPK10CH, WN10PH
  • X-offset design to adjust diameter size on turning machines and optimize tolerances on machining centers
  • Coolant channels exit right behind the cutting edge
  • Differentiated insert shapes to avoid grade mixing between central and periphery inserts
  • Optimized flutes to contain chips during machining 
  • Flanged shank to increase the overall drill stability in deep-drilling applications
Select Filters
Filters
Filters
Filters
View filters in
Metric
Inch
Key Filters
Workpiece Material
Workpiece Material
  • P Steel (596)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (556)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS
      (556)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS
      (540)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS
      (540)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS
      (540)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS
      (532)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS
      (532)
  • M Stainless Steel (556)
    • M1
      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS
      (556)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS
      (532)
    • M3
      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS
      (532)
  • K Cast Iron (540)
    • K1
      Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS
      (540)
    • K2
      Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS
      (540)
    • K3
      High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS
      (540)
  • N Non-Ferrous Materials (508)
    • N1
      Wrought Aluminum
      (508)
    • N2
      Low-Silicon Aluminum Alloys and Magnesium Alloys Si <12.2%
      (508)
    • N3
      High-Silicon Aluminum Alloys Si >12.2%
      (508)
  • S High-Temp Alloys (516)
    • S1
      Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS
      (264)
    • S2
      Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS
      (264)
    • S3
      Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS
      (516)
    • S4
      Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS
      (516)
Select All Star
  • CN (44)
  • DE (251)
  • GB (78)
  • IN (59)
  • SG (251)
  • US (119)
Applications
Applications
  • Convex Drilling Convex Drilling (190)
  • Corner Style SquareEnd Drilling Corner Style SquareEnd Drilling (260)
  • Drilling Drilling (492)
  • Inclined Entry Drilling Inclined Entry Drilling (190)
  • Inclined Exit Drilling Inclined Exit Drilling (190)
  • Stacked Plates Drilling Stacked Plates Drilling (54)
  • X-Offset Drilling X-Offset Drilling (368)
Cutting Diameter
Cutting Diameter
  • 0.473 in (4)
  • 0.474 in (4)
  • 0.492 in (4)
  • 0.5 in (8)
  • 0.512 in (4)
  • 0.531 in (8)
  • 0.551 in (4)
  • 0.564 in (4)
  • 0.572 in (4)
  • 0.591 in (4)
  • 0.595 in (4)
  • 0.61 in (4)
  • 0.625 in (4)
  • 0.63 in (4)
  • 0.65 in (4)
  • 0.656 in (4)
  • 0.669 in (4)
  • 0.689 in (4)
  • 0.69 in (4)
  • 0.704 in (4)
  • 0.709 in (4)
  • 0.72 in (4)
  • 0.728 in (4)
  • 0.734 in (4)
  • 0.748 in (4)
  • 0.75 in (4)
  • 0.768 in (4)
  • 0.781 in (4)
  • 0.787 in (4)
  • 0.807 in (4)
  • 0.814 in (4)
  • 0.828 in (4)
  • 0.845 in (4)
  • 0.866 in (4)
  • 0.875 in (4)
  • 0.886 in (4)
  • 0.906 in (8)
  • 0.939 in (4)
  • 0.946 in (4)
  • 0.969 in (4)
  • 0.984 in (8)
  • 1.0 in (4)
  • 1.024 in (4)
  • 1.031 in (4)
  • 1.043 in (4)
  • 1.063 in (8)
  • 1.094 in (4)
  • 1.102 in (4)
  • 1.125 in (4)
  • 1.143 in (4)
  • 1.156 in (4)
  • 1.181 in (4)
  • 1.188 in (4)
  • 1.21 in (4)
  • 1.219 in (4)
  • 1.22 in (4)
  • 1.25 in (4)
  • 1.26 in (4)
  • 1.281 in (4)
  • 1.299 in (4)
  • 1.313 in (4)
  • 1.339 in (4)
  • 1.375 in (4)
  • 1.379 in (4)
  • 1.407 in (4)
  • 1.417 in (4)
  • 1.438 in (4)
  • 1.457 in (4)
  • 1.469 in (4)
  • 1.476 in (4)
  • 1.496 in (4)
  • 1.5 in (4)
  • 1.532 in (4)
  • 1.536 in (4)
  • 1.563 in (4)
  • 1.575 in (4)
  • 1.614 in (4)
  • 1.625 in (4)
  • 1.655 in (4)
  • 1.657 in (4)
  • 1.688 in (4)
  • 1.693 in (4)
  • 1.732 in (4)
  • 1.75 in (4)
  • 1.772 in (4)
  • 1.811 in (4)
  • 1.813 in (4)
  • 1.85 in (4)
  • 1.875 in (4)
  • 1.891 in (4)
  • 1.929 in (4)
  • 1.938 in (4)
  • 1.969 in (4)
  • 1.988 in (4)
  • 2.0 in (4)
  • 2.008 in (4)
  • 2.047 in (4)
  • 2.087 in (4)
  • 2.125 in (4)
  • 2.126 in (4)
Cutting Diameter Min to Cutting Diameter Max
Cutting Diameter
Cutting Diameter
  • 12.0 mm (4)
  • 12.025 mm (4)
  • 12.5 mm (4)
  • 12.701 mm (8)
  • 13.0 mm (4)
  • 13.476 mm (4)
  • 13.5 mm (4)
  • 14.0 mm (4)
  • 14.3 mm (4)
  • 14.5 mm (4)
  • 15.0 mm (4)
  • 15.101 mm (4)
  • 15.5 mm (4)
  • 15.875 mm (4)
  • 16.0 mm (4)
  • 16.5 mm (4)
  • 16.651 mm (4)
  • 17.0 mm (4)
  • 17.475 mm (4)
  • 17.5 mm (4)
  • 17.85 mm (4)
  • 18.0 mm (4)
  • 18.276 mm (4)
  • 18.5 mm (4)
  • 18.651 mm (4)
  • 19.0 mm (4)
  • 19.05 mm (4)
  • 19.5 mm (4)
  • 19.826 mm (4)
  • 20.0 mm (4)
  • 20.5 mm (4)
  • 20.651 mm (4)
  • 21.0 mm (4)
  • 21.451 mm (4)
  • 22.0 mm (4)
  • 22.225 mm (4)
  • 22.5 mm (4)
  • 23.0 mm (8)
  • 23.826 mm (4)
  • 24.0 mm (4)
  • 24.625 mm (4)
  • 25.0 mm (8)
  • 25.401 mm (4)
  • 26.0 mm (4)
  • 26.175 mm (4)
  • 26.5 mm (4)
  • 27.0 mm (8)
  • 27.8 mm (4)
  • 28.0 mm (4)
  • 28.576 mm (4)
  • 29.0 mm (4)
  • 29.35 mm (4)
  • 30.0 mm (4)
  • 30.175 mm (4)
  • 30.725 mm (4)
  • 30.975 mm (4)
  • 31.0 mm (4)
  • 31.75 mm (4)
  • 32.0 mm (4)
  • 32.525 mm (4)
  • 33.0 mm (4)
  • 33.35 mm (4)
  • 34.0 mm (4)
  • 34.926 mm (4)
  • 35.0 mm (4)
  • 35.7 mm (4)
  • 36.0 mm (4)
  • 36.525 mm (4)
  • 37.0 mm (4)
  • 37.325 mm (4)
  • 37.5 mm (4)
  • 38.0 mm (4)
  • 38.1 mm (4)
  • 38.875 mm (4)
  • 39.0 mm (4)
  • 39.7 mm (4)
  • 40.0 mm (4)
  • 41.0 mm (4)
  • 41.276 mm (4)
  • 42.0 mm (4)
  • 42.051 mm (4)
  • 42.875 mm (4)
  • 43.0 mm (4)
  • 44.0 mm (4)
  • 44.45 mm (4)
  • 45.0 mm (4)
  • 46.0 mm (4)
  • 46.051 mm (4)
  • 47.0 mm (4)
  • 47.625 mm (4)
  • 48.0 mm (4)
  • 49.0 mm (4)
  • 49.225 mm (4)
  • 50.0 mm (4)
  • 50.5 mm (4)
  • 50.801 mm (4)
  • 51.0 mm (4)
  • 52.0 mm (4)
  • 53.0 mm (4)
  • 53.975 mm (4)
Cutting Diameter Min to Cutting Diameter Max
Cutting Condition
Cutting Condition
  • Interrupted (40)
  • Stable (64)
  • Unstable (56)
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 24.425 mm (1)
  • 24.475 mm (1)
  • 25.451 mm (1)
  • 25.85 mm (2)
  • 26.475 mm (1)
  • 27.451 mm (1)
  • 27.475 mm (1)
  • 28.475 mm (1)
  • 29.1 mm (1)
  • 29.526 mm (1)
  • 30.55 mm (1)
  • 30.725 mm (1)
  • 31.55 mm (1)
  • 32.325 mm (1)
  • 32.575 mm (1)
  • 33.6 mm (1)
  • 33.926 mm (1)
  • 34.6 mm (1)
  • 35.575 mm (1)
  • 35.625 mm (1)
  • 36.35 mm (1)
  • 36.426 mm (1)
  • 36.475 mm (1)
  • 36.65 mm (1)
  • 37.176 mm (1)
  • 37.65 mm (1)
  • 37.95 mm (2)
  • 38.551 mm (2)
  • 38.676 mm (1)
  • 38.776 mm (1)
  • 39.475 mm (1)
  • 39.7 mm (1)
  • 40.401 mm (1)
  • 40.725 mm (1)
  • 40.95 mm (1)
  • 40.975 mm (1)
  • 41.725 mm (1)
  • 42.051 mm (1)
  • 42.475 mm (1)
  • 42.75 mm (1)
  • 43.401 mm (1)
  • 43.651 mm (1)
  • 44.026 mm (1)
  • 44.776 mm (1)
  • 45.225 mm (1)
  • 45.551 mm (1)
  • 45.801 mm (2)
  • 46.801 mm (1)
  • 46.825 mm (1)
  • 47.051 mm (1)
  • 48.2 mm (1)
  • 48.426 mm (1)
  • 48.475 mm (1)
  • 48.5 mm (1)
  • 48.575 mm (1)
  • 48.875 mm (1)
  • 50.1 mm (1)
  • 50.125 mm (1)
  • 50.45 mm (1)
  • 50.6 mm (1)
  • 50.901 mm (2)
  • 51.25 mm (2)
  • 51.6 mm (1)
  • 51.725 mm (1)
  • 52.475 mm (1)
  • 52.926 mm (1)
  • 53.051 mm (1)
  • 53.125 mm (1)
  • 53.325 mm (1)
  • 53.95 mm (1)
  • 54.2 mm (1)
  • 54.426 mm (1)
  • 54.475 mm (1)
  • 54.651 mm (1)
  • 54.975 mm (2)
  • 55.426 mm (1)
  • 56.151 mm (1)
  • 56.475 mm (1)
  • 56.575 mm (2)
  • 57.0 mm (1)
  • 57.676 mm (1)
  • 57.7 mm (1)
  • 57.825 mm (1)
  • 58.151 mm (1)
  • 58.526 mm (1)
  • 59.026 mm (1)
  • 59.2 mm (1)
  • 59.75 mm (1)
  • 60.225 mm (1)
  • 60.426 mm (1)
  • 60.5 mm (1)
  • 60.551 mm (1)
  • 60.725 mm (1)
  • 63.95 mm (2)
  • 75.976 mm (2)
  • 81.976 mm (2)
  • 108.976 mm (2)
  • 113.301 mm (2)
  • 135.975 mm (2)
  • 173.525 mm (2)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Maximum Hole Depth [L4]
Maximum Hole Depth [L4]
  • 0.962 in (1)
  • 0.964 in (1)
  • 1.002 in (1)
  • 1.018 in (2)
  • 1.042 in (1)
  • 1.081 in (1)
  • 1.082 in (1)
  • 1.121 in (1)
  • 1.147 in (1)
  • 1.162 in (1)
  • 1.203 in (1)
  • 1.21 in (1)
  • 1.242 in (1)
  • 1.274 in (1)
  • 1.282 in (1)
  • 1.323 in (1)
  • 1.336 in (1)
  • 1.362 in (1)
  • 1.401 in (1)
  • 1.403 in (1)
  • 1.431 in (1)
  • 1.434 in (1)
  • 1.436 in (1)
  • 1.443 in (1)
  • 1.464 in (1)
  • 1.482 in (1)
  • 1.494 in (2)
  • 1.518 in (2)
  • 1.524 in (1)
  • 1.528 in (1)
  • 1.554 in (1)
  • 1.563 in (1)
  • 1.591 in (1)
  • 1.603 in (1)
  • 1.612 in (1)
  • 1.613 in (1)
  • 1.643 in (1)
  • 1.657 in (1)
  • 1.672 in (1)
  • 1.683 in (1)
  • 1.709 in (1)
  • 1.719 in (1)
  • 1.733 in (1)
  • 1.764 in (1)
  • 1.782 in (1)
  • 1.793 in (1)
  • 1.803 in (2)
  • 1.843 in (1)
  • 1.844 in (1)
  • 1.852 in (1)
  • 1.899 in (1)
  • 1.907 in (1)
  • 1.909 in (2)
  • 1.913 in (1)
  • 1.924 in (1)
  • 1.972 in (1)
  • 1.973 in (1)
  • 1.986 in (1)
  • 1.992 in (1)
  • 2.004 in (2)
  • 2.019 in (2)
  • 2.031 in (1)
  • 2.036 in (1)
  • 2.066 in (1)
  • 2.084 in (1)
  • 2.089 in (1)
  • 2.092 in (1)
  • 2.099 in (1)
  • 2.124 in (1)
  • 2.134 in (1)
  • 2.144 in (1)
  • 2.145 in (1)
  • 2.152 in (1)
  • 2.164 in (2)
  • 2.182 in (1)
  • 2.211 in (1)
  • 2.223 in (1)
  • 2.227 in (2)
  • 2.244 in (1)
  • 2.271 in (1)
  • 2.273 in (1)
  • 2.277 in (1)
  • 2.289 in (1)
  • 2.305 in (1)
  • 2.324 in (1)
  • 2.331 in (1)
  • 2.352 in (1)
  • 2.371 in (1)
  • 2.379 in (1)
  • 2.382 in (1)
  • 2.384 in (1)
  • 2.391 in (1)
  • 2.398 in (1)
  • 2.519 in (2)
  • 2.991 in (2)
  • 3.227 in (2)
  • 4.29 in (2)
  • 4.461 in (2)
  • 5.353 in (2)
  • 6.832 in (2)
Maximum Hole Depth [L4] Min to Maximum Hole Depth [L4] Max
Reach
Reach
  • 1.528 in (1)
  • 1.532 in (1)
  • 1.594 in (1)
  • 1.618 in (2)
  • 1.657 in (1)
  • 1.717 in (1)
  • 1.72 in (1)
  • 1.728 in (1)
  • 1.764 in (1)
  • 1.792 in (1)
  • 1.85 in (1)
  • 1.862 in (1)
  • 1.913 in (1)
  • 1.961 in (1)
  • 1.976 in (1)
  • 2.0 in (1)
  • 2.004 in (1)
  • 2.035 in (1)
  • 2.059 in (1)
  • 2.087 in (1)
  • 2.098 in (1)
  • 2.118 in (2)
  • 2.158 in (1)
  • 2.161 in (1)
  • 2.169 in (1)
  • 2.205 in (1)
  • 2.221 in (1)
  • 2.244 in (1)
  • 2.248 in (1)
  • 2.257 in (1)
  • 2.281 in (1)
  • 2.283 in (1)
  • 2.303 in (1)
  • 2.327 in (1)
  • 2.346 in (1)
  • 2.35 in (1)
  • 2.362 in (1)
  • 2.41 in (1)
  • 2.441 in (1)
  • 2.449 in (1)
  • 2.457 in (1)
  • 2.469 in (1)
  • 2.472 in (1)
  • 2.476 in (1)
  • 2.524 in (1)
  • 2.531 in (1)
  • 2.551 in (1)
  • 2.579 in (1)
  • 2.587 in (1)
  • 2.594 in (1)
  • 2.606 in (1)
  • 2.618 in (2)
  • 2.646 in (1)
  • 2.681 in (1)
  • 2.685 in (1)
  • 2.713 in (1)
  • 2.717 in (1)
  • 2.744 in (1)
  • 2.769 in (1)
  • 2.777 in (1)
  • 2.781 in (1)
  • 2.783 in (1)
  • 2.831 in (1)
  • 2.839 in (2)
  • 2.846 in (1)
  • 2.85 in (1)
  • 2.87 in (1)
  • 2.89 in (1)
  • 2.906 in (1)
  • 2.93 in (1)
  • 2.942 in (2)
  • 2.988 in (2)
  • 3.035 in (2)
  • 3.118 in (2)
  • 3.228 in (3)
  • 3.583 in (2)
  • 3.744 in (2)
  • 3.815 in (2)
  • 3.972 in (2)
  • 4.035 in (2)
  • 4.043 in (2)
  • 4.162 in (2)
  • 4.291 in (2)
  • 4.335 in (2)
  • 4.449 in (2)
  • 4.65 in (2)
  • 4.654 in (2)