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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 59.70 974220-C3 63.90
.0200 .017 .012 .031 2 1/8 1-1/2 52820 59.70 52820-C3 63.90
.0200 .017 .012 .047 2 1/8 1-1/2 23200 63.50 23200-C3 67.70
.0200 .017 .012 .062 2 1/8 1-1/2 54620 65.60 54620-C3 69.80
.0250 .021 .014 .031 2 1/8 1-1/2 974225 52.50 974225-C3 56.70
.0250 .021 .014 .047 2 1/8 1-1/2 52825 52.50 52825-C3 56.70
.0250 .021 .014 .062 2 1/8 1-1/2 23201 56.40 23201-C3 60.60
.0250 .021 .014 .078 2 1/8 1-1/2 54625 58.50 54625-C3 62.70
1/32 .027 .016 .015 2 1/8 1-1/2 931502 48.10 931502-C3 52.30
1/32 .027 .016 .031 2 1/8 1-1/2 23102 48.10 23102-C3 52.30
1/32 .027 .016 .047 2 1/8 1-1/2 974231 48.10 974231-C3 52.30
1/32 .027 .016 .062 2 1/8 1-1/2 52831 48.10 52831-C3 52.30
1/32 .027 .016 .078 2 1/8 1-1/2 39731 48.10 39731-C3 52.30
1/32 .027 .016 .093 2 1/8 1-1/2 23202 49.50 23202-C3 53.70
1/32 .027 .016 .125 2 1/8 1-1/2 54631 56.40 54631-C3 60.60
1/32 .027 .016 .187 2 1/8 1-1/2 55202 56.40 55202-C3 60.60
.0394 (1 mm) .033 .024 .047 2 1/8 1-1/2 2311M 48.10 2311M-C3 52.30
.0394 (1 mm) .033 .024 .062 2 1/8 1-1/2 97421M 48.10 97421M-C3 52.30
.0394 (1 mm) .033 .024 .078 2 1/8 1-1/2 5281M 48.10 5281M-C3 52.30
.0394 (1 mm) .033 .024 .093 2 1/8 1-1/2 3971M 48.10 3971M-C3 52.30
.0394 (1 mm) .033 .024 .125 2 1/8 1-1/2 2321M 55.10 2321M-C3 59.30
.0394 (1 mm) .033 .024 .187 2 1/8 1-1/2 54639 56.40 54639-C3 60.60
.0394 (1 mm) .033 .024 .250 2 1/8 1-1/2 5521M 62.40 5521M-C3 66.60
3/64 .040 .029 .062 2 1/8 1-1/2 974247 48.10 974247-C3 52.30
3/64 .040 .029 .093 2 1/8 1-1/2 52847 48.10 52847-C3 52.30
3/64 .040 .029 .125 2 1/8 1-1/2 39703 48.10 39703-C3 52.30
3/64 .040 .029 .156 2 1/8 1-1/2 23203 56.40 23203-C3 60.60
3/64 .040 .029 .250 2 1/8 1-1/2 54647 56.40 54647-C3 60.60
3/64 .040 .029 .375 2 1/8 1-1/2 55203 59.40 55203-C3 63.60
1/16 .053 .037 .031 2 1/8 1-1/2 931504 32.10 931504-C3 36.30
1/16 .053 .037 .062 2 1/8 1-1/2 23104 32.10 23104-C3 36.30
1/16 .053 .037 .093 2 1/8 1-1/2 52862 32.10 52862-C3 36.30
1/16 .053 .037 .125 2 1/8 1-1/2 39704 33.40 39704-C3 37.60
1/16 .053 .037 .187 2 1/8 1-1/2 23204 33.40 23204-C3 37.60
1/16 .053 .037 .250 2 1/8 1-1/2 54662 41.20 54662-C3 45.40
1/16 .053 .037 .312 2 1/8 1-1/2 909062 41.20 909062-C3 45.40
1/16 .053 .037 .375 2 1/8 1-1/2 55204 41.20 55204-C3 45.40
1/16 .053 .037 .437 2 1/8 2 867762 47.20 867762-C3 51.40
5/64 .067 .045 .062 2 1/8 1-1/2 23105 32.70 23105-C3 36.90
5/64 .067 .045 .125 2 1/8 1-1/2 52878 32.70 52878-C3 36.90
5/64 .067 .045 .187 2 1/8 1-1/2 39705 34.10 39705-C3 38.30
5/64 .067 .045 .250 2 1/8 1-1/2 23205 35.10 23205-C3 39.30
5/64 .067 .045 .375 2 1/8 2 54678 41.90 54678-C3 46.10
5/64 .067 .045 .500 2 1/8 2 55205 41.90 55205-C3 46.10
3/32 .079 .054 .062 2 1/8 1-1/2 23106 32.70 23106-C3 36.90
3/32 .079 .054 .125 2 1/8 1-1/2 974293 32.70 974293-C3 36.90
3/32 .079 .054 .187 2 1/8 1-1/2 905106 32.70 905106-C3 36.90
3/32 .079 .054 .250 2 1/8 1-1/2 52893 32.70 52893-C3 36.90
3/32 .079 .054 .312 2 1/8 1-1/2 39706 35.70 39706-C3 39.90
3/32 .079 .054 .375 2 1/8 1-1/2 23206 35.70 23206-C3 39.90
3/32 .079 .054 .437 2 1/8 2 41306 41.90 41306-C3 46.10
3/32 .079 .054 .500 2 1/8 2 54693 41.90 54693-C3 46.10
3/32 .079 .054 .625 2 1/8 2 55206 48.10 55206-C3 52.30
7/64 .093 .064 .187 2 1/8 1-1/2 905107 32.10 905107-C3 36.30
7/64 .093 .064 .250 2 1/8 1-1/2 52907 32.10 52907-C3 36.30
7/64 .093 .064 .375 2 1/8 1-1/2 39707 35.10 39707-C3 39.30
7/64 .093 .064 .500 2 1/8 2 23207 41.20 23207-C3 45.40
.1181 (3 mm) .100 .070 .093 2 1/8 1-1/2 2313M 32.10 2313M-C3 36.30
.1181 (3 mm) .100 .070 .187 2 1/8 1-1/2 90513M 32.10 90513M-C3 36.30
.1181 (3 mm) .100 .070 .250 2 1/8 1-1/2 5283M 32.10 5283M-C3 36.30
.1181 (3 mm) .100 .070 .375 2 1/8 1-1/2 3973M 35.10 3973M-C3 39.30
.1181 (3 mm) .100 .070 .500 2 1/8 2 2323M 41.20 2323M-C3 45.40
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 28.20 931508-C3 32.40
1/8 .107 .076 .125 4 1/8 1-1/2 23108 28.20 23108-C3 32.40
1/8 .107 .076 .250 4 1/8 1-1/2 52908 29.90 52908-C3 34.10
1/8 .107 .076 .375 4 1/8 1-1/2 39708 30.50 39708-C3 34.70
1/8 .107 .076 .500 4 1/8 1-1/2 23208 32.70 23208-C3 36.90
1/8 .107 .076 .625 4 1/8 2 922908 34.90 922908-C3 39.10
1/8 .107 .076 .750 4 1/8 2 41308 34.90 41308-C3 39.10
1/8 .107 .076 1.000 4 1/8 3 29508 37.90 29508-C3 42.10
1/8 .107 .076 1.250 4 1/8 3 960608 40.50 960608-C3 44.70
1/8 .107 .076 1.500 4 1/8 3 55208 43.20 55208-C3 47.40
1/8 .107 .076 1.750 4 1/8 3 929608 45.30 929608-C3 49.50
9/64 .119 .084 .250 4 3/16 2 52909 36.40 52909-C3 40.90
9/64 .119 .084 .500 4 3/16 2 23209 41.10 23209-C3 45.60
9/64 .119 .084 .750 4 3/16 2 41309 44.10 41309-C3 48.60
5/32 .133 .098 .078 4 3/16 2 931510 33.70 931510-C3 38.20
5/32 .133 .098 .125 4 3/16 2 23110 33.70 23110-C3 38.20
5/32 .133 .098 .250 4 3/16 2 52910 36.40 52910-C3 40.90
5/32 .133 .098 .375 4 3/16 2 39710 38.40 39710-C3 42.90
5/32 .133 .098 .500 4 3/16 2 23210 41.10 23210-C3 45.60
5/32 .133 .098 .750 4 3/16 2 41310 44.10 41310-C3 48.60
5/32 .133 .098 1.000 4 3/16 3 29510 47.70 29510-C3 52.20
3/16 .160 .117 .078 4 3/16 2 931512 33.70 931512-C3 38.20
3/16 .160 .117 .125 4 3/16 2 23112 33.70 23112-C3 38.20
3/16 .160 .117 .250 4 3/16 2 52912 36.40 52912-C3 40.90
3/16 .160 .117 .375 4 3/16 2 39712 38.40 39712-C3 42.90
3/16 .160 .117 .500 4 3/16 2 23212 39.90 23212-C3 44.40
3/16 .160 .117 .750 4 3/16 2 41312 44.10 41312-C3 48.60
3/16 .160 .117 1.000 4 3/16 3 29512 47.70 29512-C3 52.20
3/16 .160 .117 1.250 4 3/16 3 960612 49.70 960612-C3 54.20
3/16 .160 .117 1.500 4 3/16 3 55212 51.40 55212-C3 55.90
3/16 .160 .117 1.750 4 3/16 3 929612 60.70 929612-C3 65.20
.1969 (5 mm) .167 .119 .250 4 1/4 2-1/2 5295M 47.10 5295M-C3 53.30
.1969 (5 mm) .167 .119 .500 4 1/4 2-1/2 2325M 48.10 2325M-C3 54.30
.1969 (5 mm) .167 .119 1.000 4 1/4 4 2955M 54.70 2955M-C3 61.20
7/32 .186 .138 .250 4 1/4 2-1/2 52914 50.40 52914-C3 56.60
7/32 .186 .138 .500 4 1/4 2-1/2 23214 52.50 23214-C3 58.70
7/32 .186 .138 .750 4 1/4 2-1/2 41314 54.90 41314-C3 61.10
.2362 (6 mm) .201 .148 .375 4 1/4 2-1/2 5296M 46.70 5296M-C3 52.90
.2362 (6 mm) .201 .148 .500 4 1/4 2-1/2 3976M 49.10 3976M-C3 55.30
.2362 (6 mm) .201 .148 .750 4 1/4 2-1/2 2326M 52.10 2326M-C3 58.30
.2362 (6 mm) .201 .148 1.250 4 1/4 4 2956M 59.40 2956M-C3 65.90
.2362 (6 mm) .201 .148 2.000 4 1/4 4 96066M 69.30 96066M-C3 76.50
1/4 .213 .158 .078 4 1/4 2-1/2 931516 44.90 931516-C3 51.10
1/4 .213 .158 .125 4 1/4 2-1/2 23116 44.90 23116-C3 51.10
1/4 .213 .158 .250 4 1/4 2-1/2 974316 47.10 974316-C3 53.30
1/4 .213 .158 .375 4 1/4 2-1/2 52916 47.70 52916-C3 53.90
1/4 .213 .158 .500 4 1/4 2-1/2 39716 49.10 39716-C3 55.30
1/4 .213 .158 .625 4 1/4 2-1/2 927616 49.70 927616-C3 55.90
1/4 .213 .158 .750 4 1/4 2-1/2 23216 52.10 23216-C3 58.30
1/4 .213 .158 1.125 4 1/4 2-1/2 41316 54.20 41316-C3 60.40
1/4 .213 .158 1.500 4 1/4 4 29516 60.40 29516-C3 66.90
1/4 .213 .158 2.000 4 1/4 4 960616 64.10 960616-C3 70.60
1/4 .213 .158 2.250 4 1/4 4 55216 67.90 55216-C3 74.40
1/4 .213 .158 2.500 4 1/4 4 929616 89.50 929616-C3 96.70
9/32 .240 .180 .375 4 5/16 2-1/2 52918 63.40 52918-C3 69.90
9/32 .240 .180 .750 4 5/16 2-1/2 23218 65.40 23218-C3 71.90
5/16 .266 .201 .187 4 5/16 2-1/2 23120 59.90 23120-C3 67.10
5/16 .266 .201 .375 4 5/16 2-1/2 52920 62.40 52920-C3 69.60
5/16 .266 .201 .500 4 5/16 2-1/2 39720 63.90 39720-C3 71.10
5/16 .266 .201 .750 4 5/16 2-1/2 23220 67.40 23220-C3 73.90
5/16 .266 .201 1.125 4 5/16 4 41320 76.40 41320-C3 83.90
5/16 .266 .201 1.500 4 5/16 4 29520 81.70 29520-C3 89.20
5/16 .266 .201 2.000 4 5/16 4 960620 86.70 960620-C3 94.20
5/16 .266 .201 2.250 4 5/16 4 55220 88.20 55220-C3 95.70
3/8 .320 .241 .093 4 3/8 2-1/2 931524 64.70 931524-C3 72.90
3/8 .320 .241 .187 4 3/8 2-1/2 23124 64.70 23124-C3 72.90
3/8 .320 .241 .375 4 3/8 2-1/2 52924 66.20 52924-C3 74.40
3/8 .320 .241 .500 4 3/8 2-1/2 39724 66.20 39724-C3 74.40
3/8 .320 .241 .750 4 3/8 2-1/2 23224 67.40 23224-C3 75.60
3/8 .320 .241 1.125 4 3/8 4 41324 83.40 41324-C3 91.90
3/8 .320 .241 1.500 4 3/8 4 29524 85.70 29524-C3 94.20
3/8 .320 .241 2.000 4 3/8 4 960624 88.70 960624-C3 97.20
3/8 .320 .241 2.250 4 3/8 4 55224 91.10 55224-C3 99.60
3/8 .320 .241 2.500 4 3/8 4 929624 94.90 929624-C3 103.40
.3937 (10 mm) .335 .252 .375 4 7/16 2-3/4 52925 93.70 52925-C3 103.90
.3937 (10 mm) .335 .252 .750 4 7/16 2-3/4 23225 94.10 23225-C3 104.30
7/16 .373 .285 .500 4 7/16 2-3/4 52928 90.90 52928-C3 101.10
7/16 .373 .285 1.000 4 7/16 2-3/4 23228 94.10 23228-C3 104.30
.4724 (12 mm) .403 .308 .500 4 1/2 3 52931 118.40 52931-C3 130.60
.4724 (12 mm) .403 .308 1.000 4 1/2 3 23231 124.90 23231-C3 137.10
1/2 .427 .323 .187 4 1/2 3 23132 92.10 23132-C3 104.30
1/2 .427 .323 .500 4 1/2 3 52932 93.90 52932-C3 106.10
1/2 .427 .323 1.000 4 1/2 3 23232 96.90 23232-C3 109.10
1/2 .427 .323 1.500 4 1/2 6 41332 163.40 41332-C3 175.60
1/2 .427 .323 2.000 4 1/2 6 29532 167.10 29532-C3 179.30
1/2 .427 .323 2.500 4 1/2 6 960632 168.90 960632-C3 181.10
1/2 .427 .323 3.000 4 1/2 6 55232 178.50 55232-C3 190.70
1/2 .427 .323 3.500 4 1/2 6 929632 188.10 929632-C3 200.30
5/8 .533 .412 1.500 4 5/8 3-1/2 23240 194.70 23240-C3 206.90
3/4 .640 .500 1.500 4 3/4 4 23248 267.90 23248-C3 281.10

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)

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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!!

3 of 4 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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