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Undercutting End Mills - 270°

Photo is an illustration of an exemplary tool

Undercutting End Mills - 270 Degree Spherical Ball Undercutting End Mills - 270 Degree: Stocked in Standard, Long Reach and Extra Length/Long Reach Lengths!
Carbide Undercutting End Mills - 270° 

  • 270° spherical ball
  • Designed for undercutting, deburring and multi-axis machining
  • Center cutting 
  • Solid carbide
  • CNC ground in the USA   

     Learn more about the features, benefits, and applications of Harvey Tool Undercutting End Mills.

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Below are downloadable Simulation Files in DXF format (half-round line drawings) to accompany Harvey Tool products. Each file is specifically scaled to the geometry of the tool to help simulate running parameters and create tool paths. Like our speeds & feeds charts, these files will be continuously updated with the introduction of new products and new catalogs to assist operating the majority of our tools. Simulation files can also be accessed by searching for a specific tool number on the left-hand side of the website and then clicking on the Simulation table in the product table.
Please don’t hesitate to contact our tech team with any questions at 800-645-5609 or tech@harveytool.com.

To navigate between folders or download a file, DOUBLE CLICK on the folder or file.

  • AlTiN
  • Uncoated
CUTTER DIA. LOC NECK DIA. NECK LENGTH FLUTES SHANK DIA. OAL UNCOATED AlTiN COATED
D1 +.000"/-.001" L2 +.010"/-.000" L3 +.020"/-.000" D2 L1 TOOL # PRICE TOOL # PRICE
.0200 .017 .012 .016 2 1/8 1-1/2 974220 65.80 974220-C3 70.20
.0200 .017 .012 .031 2 1/8 1-1/2 52820 65.80 52820-C3 70.20
.0200 .017 .012 .047 2 1/8 1-1/2 23200 70.00 23200-C3 74.40
.0200 .017 .012 .062 2 1/8 1-1/2 54620 72.30 54620-C3 76.70
.0250 .021 .014 .031 2 1/8 1-1/2 974225 58.00 974225-C3 62.40
.0250 .021 .014 .047 2 1/8 1-1/2 52825 58.00 52825-C3 62.40
.0250 .021 .014 .062 2 1/8 1-1/2 23201 62.40 23201-C3 66.80
.0250 .021 .014 .078 2 1/8 1-1/2 54625 64.60 54625-C3 69.00
1/32 .027 .016 .015 2 1/8 1-1/2 931502 53.20 931502-C3 57.60
1/32 .027 .016 .031 2 1/8 1-1/2 23102 53.20 23102-C3 57.60
1/32 .027 .016 .047 2 1/8 1-1/2 974231 53.20 974231-C3 57.60
1/32 .027 .016 .062 2 1/8 1-1/2 52831 53.20 52831-C3 57.60
1/32 .027 .016 .078 2 1/8 1-1/2 39731 53.20 39731-C3 57.60
1/32 .027 .016 .093 2 1/8 1-1/2 23202 54.70 23202-C3 59.10
1/32 .027 .016 .125 2 1/8 1-1/2 54631 62.40 54631-C3 66.80
1/32 .027 .016 .187 2 1/8 1-1/2 55202 62.40 55202-C3 66.80
.0394 (1 mm) .033 .024 .047 2 1/8 1-1/2 2311M 53.20 2311M-C3 57.60
.0394 (1 mm) .033 .024 .062 2 1/8 1-1/2 97421M 53.20 97421M-C3 57.60
.0394 (1 mm) .033 .024 .078 2 1/8 1-1/2 5281M 53.20 5281M-C3 57.60
.0394 (1 mm) .033 .024 .093 2 1/8 1-1/2 3971M 53.20 3971M-C3 57.60
.0394 (1 mm) .033 .024 .125 2 1/8 1-1/2 2321M 60.80 2321M-C3 65.20
.0394 (1 mm) .033 .024 .187 2 1/8 1-1/2 54639 62.40 54639-C3 66.80
.0394 (1 mm) .033 .024 .250 2 1/8 1-1/2 5521M 69.00 5521M-C3 73.40
3/64 .040 .029 .047 2 1/8 1-1/2 23103 53.20 23103-C3 57.60
3/64 .040 .029 .062 2 1/8 1-1/2 974247 53.20 974247-C3 57.60
3/64 .040 .029 .093 2 1/8 1-1/2 52847 53.20 52847-C3 57.60
3/64 .040 .029 .125 2 1/8 1-1/2 39703 53.20 39703-C3 57.60
3/64 .040 .029 .156 2 1/8 1-1/2 23203 62.40 23203-C3 66.80
3/64 .040 .029 .250 2 1/8 1-1/2 54647 62.40 54647-C3 66.80
3/64 .040 .029 .375 2 1/8 1-1/2 55203 65.50 55203-C3 69.90
3/64 .040 .029 .437 2 1/8 2 867747 72.10 867747-C3 76.50
1/16 .053 .037 .031 2 1/8 1-1/2 931504 35.40 931504-C3 39.80
1/16 .053 .037 .062 2 1/8 1-1/2 23104 35.40 23104-C3 39.80
1/16 .053 .037 .093 2 1/8 1-1/2 52862 35.40 52862-C3 39.80
1/16 .053 .037 .125 2 1/8 1-1/2 39704 36.90 39704-C3 41.30
1/16 .053 .037 .187 2 1/8 1-1/2 23204 36.90 23204-C3 41.30
1/16 .053 .037 .250 2 1/8 1-1/2 54662 45.60 54662-C3 50.00
1/16 .053 .037 .312 2 1/8 1-1/2 909062 45.60 909062-C3 50.00
1/16 .053 .037 .375 2 1/8 1-1/2 55204 45.60 55204-C3 50.00
1/16 .053 .037 .437 2 1/8 2 867762 52.20 867762-C3 56.60
5/64 .067 .045 .031 2 1/8 1-1/2 931505 36.10 931505-C3 40.50
5/64 .067 .045 .062 2 1/8 1-1/2 23105 36.10 23105-C3 40.50
5/64 .067 .045 .125 2 1/8 1-1/2 52878 36.10 52878-C3 40.50
5/64 .067 .045 .187 2 1/8 1-1/2 39705 37.70 39705-C3 42.10
5/64 .067 .045 .250 2 1/8 1-1/2 23205 38.70 23205-C3 43.10
5/64 .067 .045 .375 2 1/8 2 54678 46.30 54678-C3 50.70
5/64 .067 .045 .500 2 1/8 2 55205 46.30 55205-C3 50.70
5/64 .067 .045 .625 2 1/8 2 867778 46.30 867778-C3 50.70
3/32 .079 .054 .031 2 1/8 1-1/2 931506 36.10 931506-C3 40.50
3/32 .079 .054 .062 2 1/8 1-1/2 23106 36.10 23106-C3 40.50
3/32 .079 .054 .125 2 1/8 1-1/2 974293 36.10 974293-C3 40.50
3/32 .079 .054 .187 2 1/8 1-1/2 905106 36.10 905106-C3 40.50
3/32 .079 .054 .250 2 1/8 1-1/2 52893 36.10 52893-C3 40.50
3/32 .079 .054 .312 2 1/8 1-1/2 39706 39.40 39706-C3 43.80
3/32 .079 .054 .375 2 1/8 1-1/2 23206 39.40 23206-C3 43.80
3/32 .079 .054 .437 2 1/8 2 41306 46.30 41306-C3 50.70
3/32 .079 .054 .500 2 1/8 2 54693 46.30 54693-C3 50.70
3/32 .079 .054 .625 2 1/8 2 55206 53.20 55206-C3 57.60
7/64 .093 .064 .187 2 1/8 1-1/2 905107 35.40 905107-C3 39.80
7/64 .093 .064 .250 2 1/8 1-1/2 52907 35.40 52907-C3 39.80
7/64 .093 .064 .375 2 1/8 1-1/2 39707 38.70 39707-C3 43.10
7/64 .093 .064 .500 2 1/8 2 23207 45.60 23207-C3 50.00
7/64 .093 .064 1.000 2 1/8 3 29507 52.20 29507-C3 56.60
.1181 (3 mm) .100 .070 .093 2 1/8 1-1/2 2313M 35.40 2313M-C3 39.80
.1181 (3 mm) .100 .070 .187 2 1/8 1-1/2 90513M 35.40 90513M-C3 39.80
.1181 (3 mm) .100 .070 .250 2 1/8 1-1/2 5283M 35.40 5283M-C3 39.80
.1181 (3 mm) .100 .070 .375 2 1/8 1-1/2 3973M 38.70 3973M-C3 43.10
.1181 (3 mm) .100 .070 .500 2 1/8 2 2323M 45.60 2323M-C3 50.00
D1 +.000"/-.002" L2 +.020"/-.000" L3 +.030"/-.000" D2 L1 TOOL # PRICE TOOL # PRICE
1/8 .107 .076 .062 4 1/8 1-1/2 931508 31.20 931508-C3 35.60
1/8 .107 .076 .125 4 1/8 1-1/2 23108 31.20 23108-C3 35.60
1/8 .107 .076 .250 4 1/8 1-1/2 52908 33.00 52908-C3 37.40
1/8 .107 .076 .375 4 1/8 1-1/2 39708 33.70 39708-C3 38.10
1/8 .107 .076 .500 4 1/8 1-1/2 23208 36.10 23208-C3 40.50
1/8 .107 .076 .625 4 1/8 2 922908 38.50 922908-C3 42.90
1/8 .107 .076 .750 4 1/8 2 41308 38.50 41308-C3 42.90
1/8 .107 .076 1.000 4 1/8 3 29508 41.90 29508-C3 46.30
1/8 .107 .076 1.250 4 1/8 3 960608 44.80 960608-C3 49.20
1/8 .107 .076 1.500 4 1/8 3 55208 47.70 55208-C3 52.10
1/8 .107 .076 1.750 4 1/8 3 929608 50.10 929608-C3 54.50
9/64 .119 .084 .125 4 3/16 2 23109 37.20 23109-C3 42.00
9/64 .119 .084 .250 4 3/16 2 52909 40.30 52909-C3 45.10
9/64 .119 .084 .500 4 3/16 2 23209 45.40 23209-C3 50.20
9/64 .119 .084 .750 4 3/16 2 41309 48.70 41309-C3 53.50
5/32 .133 .098 .078 4 3/16 2 931510 37.20 931510-C3 42.00
5/32 .133 .098 .125 4 3/16 2 23110 37.20 23110-C3 42.00
5/32 .133 .098 .250 4 3/16 2 52910 40.30 52910-C3 45.10
5/32 .133 .098 .375 4 3/16 2 39710 42.40 39710-C3 47.20
5/32 .133 .098 .500 4 3/16 2 23210 45.40 23210-C3 50.20
5/32 .133 .098 .750 4 3/16 2 41310 48.70 41310-C3 53.50
5/32 .133 .098 1.000 4 3/16 3 29510 52.60 29510-C3 57.40
5/32 .133 .098 1.500 4 3/16 3 55210 54.90 55210-C3 59.70
3/16 .160 .117 .078 4 3/16 2 931512 37.20 931512-C3 42.00
3/16 .160 .117 .125 4 3/16 2 23112 37.20 23112-C3 42.00
3/16 .160 .117 .250 4 3/16 2 52912 40.30 52912-C3 45.10
3/16 .160 .117 .375 4 3/16 2 39712 42.40 39712-C3 47.20
3/16 .160 .117 .500 4 3/16 2 23212 44.00 23212-C3 48.80
3/16 .160 .117 .750 4 3/16 2 41312 48.70 41312-C3 53.50
3/16 .160 .117 1.000 4 3/16 3 29512 52.60 29512-C3 57.40
3/16 .160 .117 1.250 4 3/16 3 960612 54.80 960612-C3 59.60
3/16 .160 .117 1.500 4 3/16 3 55212 56.80 55212-C3 61.60
3/16 .160 .117 1.750 4 3/16 3 929612 67.10 929612-C3 71.90
.1969 (5 mm) .167 .119 .250 4 1/4 2-1/2 5295M 52.00 5295M-C3 58.60
.1969 (5 mm) .167 .119 .500 4 1/4 2-1/2 2325M 53.20 2325M-C3 59.80
.1969 (5 mm) .167 .119 1.000 4 1/4 4 2955M 60.40 2955M-C3 68.00
7/32 .186 .138 .250 4 1/4 2-1/2 52914 55.80 52914-C3 62.40
7/32 .186 .138 .500 4 1/4 2-1/2 23214 58.00 23214-C3 64.60
7/32 .186 .138 .750 4 1/4 2-1/2 41314 60.60 41314-C3 67.20
.2362 (6 mm) .201 .148 .250 4 1/4 2-1/2 97436M 51.60 97436M-C3 58.20
.2362 (6 mm) .201 .148 .375 4 1/4 2-1/2 5296M 51.60 5296M-C3 58.20
.2362 (6 mm) .201 .148 .500 4 1/4 2-1/2 3976M 54.30 3976M-C3 60.90
.2362 (6 mm) .201 .148 .750 4 1/4 2-1/2 2326M 57.60 2326M-C3 64.20
.2362 (6 mm) .201 .148 1.250 4 1/4 4 2956M 65.50 2956M-C3 73.10
.2362 (6 mm) .201 .148 2.000 4 1/4 4 96066M 76.50 96066M-C3 84.10
1/4 .213 .158 .078 4 1/4 2-1/2 931516 49.60 931516-C3 56.20
1/4 .213 .158 .125 4 1/4 2-1/2 23116 49.60 23116-C3 56.20
1/4 .213 .158 .250 4 1/4 2-1/2 974316 52.00 974316-C3 58.60
1/4 .213 .158 .375 4 1/4 2-1/2 52916 52.60 52916-C3 59.20
1/4 .213 .158 .500 4 1/4 2-1/2 39716 54.30 39716-C3 60.90
1/4 .213 .158 .625 4 1/4 2-1/2 927616 54.80 927616-C3 61.40
1/4 .213 .158 .750 4 1/4 2-1/2 23216 57.60 23216-C3 64.20
1/4 .213 .158 1.125 4 1/4 2-1/2 41316 60.00 41316-C3 66.60
1/4 .213 .158 1.500 4 1/4 4 29516 66.70 29516-C3 74.30
1/4 .213 .158 2.000 4 1/4 4 960616 70.80 960616-C3 78.40
1/4 .213 .158 2.250 4 1/4 4 55216 75.00 55216-C3 82.60
1/4 .213 .158 2.500 4 1/4 4 929616 98.80 929616-C3 106.40
9/32 .240 .180 .375 4 5/16 2-1/2 52918 70.00 52918-C3 77.60
9/32 .240 .180 .750 4 5/16 2-1/2 23218 72.10 23218-C3 79.70
5/16 .266 .201 .187 4 5/16 2-1/2 23120 66.30 23120-C3 73.90
5/16 .266 .201 .375 4 5/16 2-1/2 52920 69.00 52920-C3 76.60
5/16 .266 .201 .500 4 5/16 2-1/2 39720 70.60 39720-C3 78.20
5/16 .266 .201 .750 4 5/16 2-1/2 23220 74.40 23220-C3 82.00
5/16 .266 .201 1.125 4 5/16 4 41320 84.40 41320-C3 93.60
5/16 .266 .201 1.500 4 5/16 4 29520 90.20 29520-C3 99.40
5/16 .266 .201 2.000 4 5/16 4 960620 95.70 960620-C3 104.90
5/16 .266 .201 2.250 4 5/16 4 55220 97.30 55220-C3 106.50
5/16 .266 .201 2.500 4 5/16 4 929620 97.30 929620-C3 106.50
3/8 .320 .241 .093 4 3/8 2-1/2 931524 71.50 931524-C3 80.20
3/8 .320 .241 .187 4 3/8 2-1/2 23124 71.50 23124-C3 80.20
3/8 .320 .241 .375 4 3/8 2-1/2 52924 73.20 52924-C3 81.90
3/8 .320 .241 .500 4 3/8 2-1/2 39724 73.20 39724-C3 81.90
3/8 .320 .241 .750 4 3/8 2-1/2 23224 74.40 23224-C3 83.10
3/8 .320 .241 1.125 4 3/8 4 41324 92.10 41324-C3 104.00
3/8 .320 .241 1.500 4 3/8 4 29524 94.60 29524-C3 106.50
3/8 .320 .241 2.000 4 3/8 4 960624 97.90 960624-C3 109.80
3/8 .320 .241 2.250 4 3/8 4 55224 100.50 55224-C3 112.40
3/8 .320 .241 2.500 4 3/8 4 929624 104.70 929624-C3 116.60
.3937 (10 mm) .335 .252 .375 4 7/16 2-3/4 52925 103.40 52925-C3 114.20
.3937 (10 mm) .335 .252 .750 4 7/16 2-3/4 23225 103.80 23225-C3 114.60
7/16 .373 .285 .500 4 7/16 2-3/4 52928 100.30 52928-C3 111.10
7/16 .373 .285 1.000 4 7/16 2-3/4 23228 103.80 23228-C3 114.60
.4724 (12 mm) .403 .308 .500 4 1/2 3 52931 130.60 52931-C3 143.50
.4724 (12 mm) .403 .308 1.000 4 1/2 3 23231 138.00 23231-C3 150.90
1/2 .427 .323 .187 4 1/2 3 23132 101.70 23132-C3 114.60
1/2 .427 .323 .500 4 1/2 3 52932 103.60 52932-C3 116.50
1/2 .427 .323 1.000 4 1/2 3 23232 107.00 23232-C3 119.90
1/2 .427 .323 1.500 4 1/2 6 41332 180.30 41332-C3 193.20
1/2 .427 .323 2.000 4 1/2 6 29532 184.50 29532-C3 197.40
1/2 .427 .323 2.500 4 1/2 6 960632 186.40 960632-C3 199.30
1/2 .427 .323 3.000 4 1/2 6 55232 197.10 55232-C3 210.00
1/2 .427 .323 3.500 4 1/2 6 929632 207.60 929632-C3 220.50
5/8 .533 .412 1.000 4 5/8 3-1/2 39740 214.90 39740-C3 227.80
5/8 .533 .412 1.500 4 5/8 3-1/2 23240 214.90 23240-C3 227.80
3/4 .640 .500 1.500 4 3/4 4 23248 295.80 23248-C3 309.80

Speeds & Feeds

Below you will find downloadable and printer-friendly Speeds & Feeds for this product line. All posted Speed & Feed parameters are suggested starting values that may be increased given optimal setup conditions. If you can't find the information you're looking for, Harvey Tool has a team of technical experts available to assist you. Please contact us at 800-645-5609 or tech@harveytool.com.

 

 

270° - 2 Flute

270° - 4 Flute

Harvey Tool offers a wide assortment of specialty End Mills in a variety of sizes and lengths of cut. You may find our Advanced Search feature helpful to locate the best stock tool for your application. The Advanced Search allows you to select your critical dimensions to narrow your search. However, if you are looking for a tool that we don’t offer as a standard, we can provide you with a special custom tool. Simply fill out the Request for Quote (RFQ) Template that best represents the tool you need, and submit via email or fax. One of our technical experts will get back to you. If you need help designing your special tool, you can contact our Quotations Department.

Phone - 978-948-8555 ext. 6004 - Ask for our Quotations Department.
RFQ Fax - 978-948-8560
Email - tech@harveytool.com.


Special RFQ - Undercutting End Mills 

Special RFQ - Undercutting End Mills (Mini)

Need To Place An Order? Find A Local Distributor

Machinists' Feedback

4 reviews for this product. Average rating: Rating StarRating StarRating StarRating StarRating Star

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Rating StarRating StarRating StarRating StarRating Star   tooling supervisor

By Marty V. Crosby, TX, United States, October 09, 2012

You have products that I could use instead of having them custom ground!

3 of 3 people found the following review helpful:
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Rating StarRating StarRating StarRating StarRating Star   Great for deburring

By Danielle D. Pflugerville, TX, United States, September 28, 2012

These end mills are great for deburring. Our shop uses them on a regular basis. Harvey Tools are great!!

4 of 5 people found the following review helpful:
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Rating StarRating StarRating StarRating StarRating Star   #23204-C3

By Gabe N. S, MA, United States, December 22, 2011

A year ago I’d never heard of Harvey Tool’s 270 degree undercutting end mill, and now I can’t imagine how I’ll be able to make it through Christmas day if I don’t get it in my stocking...

3 of 4 people found the following review helpful:
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Rating StarRating StarRating StarRating StarRating Star   Works great for deburring!

By Thomas K. Jefferson, WI, United States, November 03, 2011

I have used a lot of these for crosshole deburring in aluminum and they work great.

8 of 8 people found the following review helpful:
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