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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 62.70 974220-C3 66.90
.0200 .017 .012 .031 2 1/8 1-1/2 52820 62.70 52820-C3 66.90
.0200 .017 .012 .047 2 1/8 1-1/2 23200 66.70 23200-C3 70.90
.0200 .017 .012 .062 2 1/8 1-1/2 54620 68.90 54620-C3 73.10
.0250 .021 .014 .031 2 1/8 1-1/2 974225 55.20 974225-C3 59.40
.0250 .021 .014 .047 2 1/8 1-1/2 52825 55.20 52825-C3 59.40
.0250 .021 .014 .062 2 1/8 1-1/2 23201 59.40 23201-C3 63.60
.0250 .021 .014 .078 2 1/8 1-1/2 54625 61.50 54625-C3 65.70
1/32 .027 .016 .015 2 1/8 1-1/2 931502 50.70 931502-C3 54.90
1/32 .027 .016 .031 2 1/8 1-1/2 23102 50.70 23102-C3 54.90
1/32 .027 .016 .047 2 1/8 1-1/2 974231 50.70 974231-C3 54.90
1/32 .027 .016 .062 2 1/8 1-1/2 52831 50.70 52831-C3 54.90
1/32 .027 .016 .078 2 1/8 1-1/2 39731 50.70 39731-C3 54.90
1/32 .027 .016 .093 2 1/8 1-1/2 23202 52.10 23202-C3 56.30
1/32 .027 .016 .125 2 1/8 1-1/2 54631 59.40 54631-C3 63.60
1/32 .027 .016 .187 2 1/8 1-1/2 55202 59.40 55202-C3 63.60
.0394 (1 mm) .033 .024 .047 2 1/8 1-1/2 2311M 50.70 2311M-C3 54.90
.0394 (1 mm) .033 .024 .062 2 1/8 1-1/2 97421M 50.70 97421M-C3 54.90
.0394 (1 mm) .033 .024 .078 2 1/8 1-1/2 5281M 50.70 5281M-C3 54.90
.0394 (1 mm) .033 .024 .093 2 1/8 1-1/2 3971M 50.70 3971M-C3 54.90
.0394 (1 mm) .033 .024 .125 2 1/8 1-1/2 2321M 57.90 2321M-C3 62.10
.0394 (1 mm) .033 .024 .187 2 1/8 1-1/2 54639 59.40 54639-C3 63.60
.0394 (1 mm) .033 .024 .250 2 1/8 1-1/2 5521M 65.70 5521M-C3 69.90
3/64 .040 .029 .047 2 1/8 1-1/2 23103 50.70 23103-C3 54.90
3/64 .040 .029 .062 2 1/8 1-1/2 974247 50.70 974247-C3 54.90
3/64 .040 .029 .093 2 1/8 1-1/2 52847 50.70 52847-C3 54.90
3/64 .040 .029 .125 2 1/8 1-1/2 39703 50.70 39703-C3 54.90
3/64 .040 .029 .156 2 1/8 1-1/2 23203 59.40 23203-C3 63.60
3/64 .040 .029 .250 2 1/8 1-1/2 54647 59.40 54647-C3 63.60
3/64 .040 .029 .375 2 1/8 1-1/2 55203 62.40 55203-C3 66.60
3/64 .040 .029 .437 2 1/8 2 867747 68.70 867747-C3 72.90
1/16 .053 .037 .031 2 1/8 1-1/2 931504 33.70 931504-C3 37.90
1/16 .053 .037 .062 2 1/8 1-1/2 23104 33.70 23104-C3 37.90
1/16 .053 .037 .093 2 1/8 1-1/2 52862 33.70 52862-C3 37.90
1/16 .053 .037 .125 2 1/8 1-1/2 39704 35.10 39704-C3 39.30
1/16 .053 .037 .187 2 1/8 1-1/2 23204 35.10 23204-C3 39.30
1/16 .053 .037 .250 2 1/8 1-1/2 54662 43.40 54662-C3 47.60
1/16 .053 .037 .312 2 1/8 1-1/2 909062 43.40 909062-C3 47.60
1/16 .053 .037 .375 2 1/8 1-1/2 55204 43.40 55204-C3 47.60
1/16 .053 .037 .437 2 1/8 2 867762 49.70 867762-C3 53.90
5/64 .067 .045 .031 2 1/8 1-1/2 931505 34.40 931505-C3 38.60
5/64 .067 .045 .062 2 1/8 1-1/2 23105 34.40 23105-C3 38.60
5/64 .067 .045 .125 2 1/8 1-1/2 52878 34.40 52878-C3 38.60
5/64 .067 .045 .187 2 1/8 1-1/2 39705 35.90 39705-C3 40.10
5/64 .067 .045 .250 2 1/8 1-1/2 23205 36.90 23205-C3 41.10
5/64 .067 .045 .375 2 1/8 2 54678 44.10 54678-C3 48.30
5/64 .067 .045 .500 2 1/8 2 55205 44.10 55205-C3 48.30
5/64 .067 .045 .625 2 1/8 2 867778 44.10 867778-C3 48.30
3/32 .079 .054 .031 2 1/8 1-1/2 931506 34.40 931506-C3 38.60
3/32 .079 .054 .062 2 1/8 1-1/2 23106 34.40 23106-C3 38.60
3/32 .079 .054 .125 2 1/8 1-1/2 974293 34.40 974293-C3 38.60
3/32 .079 .054 .187 2 1/8 1-1/2 905106 34.40 905106-C3 38.60
3/32 .079 .054 .250 2 1/8 1-1/2 52893 34.40 52893-C3 38.60
3/32 .079 .054 .312 2 1/8 1-1/2 39706 37.50 39706-C3 41.70
3/32 .079 .054 .375 2 1/8 1-1/2 23206 37.50 23206-C3 41.70
3/32 .079 .054 .437 2 1/8 2 41306 44.10 41306-C3 48.30
3/32 .079 .054 .500 2 1/8 2 54693 44.10 54693-C3 48.30
3/32 .079 .054 .625 2 1/8 2 55206 50.70 55206-C3 54.90
7/64 .093 .064 .187 2 1/8 1-1/2 905107 33.70 905107-C3 37.90
7/64 .093 .064 .250 2 1/8 1-1/2 52907 33.70 52907-C3 37.90
7/64 .093 .064 .375 2 1/8 1-1/2 39707 36.90 39707-C3 41.10
7/64 .093 .064 .500 2 1/8 2 23207 43.40 23207-C3 47.60
7/64 .093 .064 1.000 2 1/8 3 29507 49.70 29507-C3 53.90
.1181 (3 mm) .100 .070 .093 2 1/8 1-1/2 2313M 33.70 2313M-C3 37.90
.1181 (3 mm) .100 .070 .187 2 1/8 1-1/2 90513M 33.70 90513M-C3 37.90
.1181 (3 mm) .100 .070 .250 2 1/8 1-1/2 5283M 33.70 5283M-C3 37.90
.1181 (3 mm) .100 .070 .375 2 1/8 1-1/2 3973M 36.90 3973M-C3 41.10
.1181 (3 mm) .100 .070 .500 2 1/8 2 2323M 43.40 2323M-C3 47.60
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 29.70 931508-C3 33.90
1/8 .107 .076 .125 4 1/8 1-1/2 23108 29.70 23108-C3 33.90
1/8 .107 .076 .250 4 1/8 1-1/2 52908 31.40 52908-C3 35.60
1/8 .107 .076 .375 4 1/8 1-1/2 39708 32.10 39708-C3 36.30
1/8 .107 .076 .500 4 1/8 1-1/2 23208 34.40 23208-C3 38.60
1/8 .107 .076 .625 4 1/8 2 922908 36.70 922908-C3 40.90
1/8 .107 .076 .750 4 1/8 2 41308 36.70 41308-C3 40.90
1/8 .107 .076 1.000 4 1/8 3 29508 39.90 29508-C3 44.10
1/8 .107 .076 1.250 4 1/8 3 960608 42.70 960608-C3 46.90
1/8 .107 .076 1.500 4 1/8 3 55208 45.40 55208-C3 49.60
1/8 .107 .076 1.750 4 1/8 3 929608 47.70 929608-C3 51.90
9/64 .119 .084 .125 4 3/16 2 23109 35.40 23109-C3 39.90
9/64 .119 .084 .250 4 3/16 2 52909 38.40 52909-C3 42.90
9/64 .119 .084 .500 4 3/16 2 23209 43.20 23209-C3 47.70
9/64 .119 .084 .750 4 3/16 2 41309 46.40 41309-C3 50.90
5/32 .133 .098 .078 4 3/16 2 931510 35.40 931510-C3 39.90
5/32 .133 .098 .125 4 3/16 2 23110 35.40 23110-C3 39.90
5/32 .133 .098 .250 4 3/16 2 52910 38.40 52910-C3 42.90
5/32 .133 .098 .375 4 3/16 2 39710 40.40 39710-C3 44.90
5/32 .133 .098 .500 4 3/16 2 23210 43.20 23210-C3 47.70
5/32 .133 .098 .750 4 3/16 2 41310 46.40 41310-C3 50.90
5/32 .133 .098 1.000 4 3/16 3 29510 50.10 29510-C3 54.60
5/32 .133 .098 1.500 4 3/16 3 55210 52.30 55210-C3 56.80
3/16 .160 .117 .078 4 3/16 2 931512 35.40 931512-C3 39.90
3/16 .160 .117 .125 4 3/16 2 23112 35.40 23112-C3 39.90
3/16 .160 .117 .250 4 3/16 2 52912 38.40 52912-C3 42.90
3/16 .160 .117 .375 4 3/16 2 39712 40.40 39712-C3 44.90
3/16 .160 .117 .500 4 3/16 2 23212 41.90 23212-C3 46.40
3/16 .160 .117 .750 4 3/16 2 41312 46.40 41312-C3 50.90
3/16 .160 .117 1.000 4 3/16 3 29512 50.10 29512-C3 54.60
3/16 .160 .117 1.250 4 3/16 3 960612 52.20 960612-C3 56.70
3/16 .160 .117 1.500 4 3/16 3 55212 54.10 55212-C3 58.60
3/16 .160 .117 1.750 4 3/16 3 929612 63.90 929612-C3 68.40
.1969 (5 mm) .167 .119 .250 4 1/4 2-1/2 5295M 49.50 5295M-C3 55.70
.1969 (5 mm) .167 .119 .500 4 1/4 2-1/2 2325M 50.70 2325M-C3 56.90
.1969 (5 mm) .167 .119 1.000 4 1/4 4 2955M 57.50 2955M-C3 64.70
7/32 .186 .138 .250 4 1/4 2-1/2 52914 53.10 52914-C3 59.30
7/32 .186 .138 .500 4 1/4 2-1/2 23214 55.20 23214-C3 61.40
7/32 .186 .138 .750 4 1/4 2-1/2 41314 57.70 41314-C3 63.90
.2362 (6 mm) .201 .148 .250 4 1/4 2-1/2 97436M 49.10 97436M-C3 55.30
.2362 (6 mm) .201 .148 .375 4 1/4 2-1/2 5296M 49.10 5296M-C3 55.30
.2362 (6 mm) .201 .148 .500 4 1/4 2-1/2 3976M 51.70 3976M-C3 57.90
.2362 (6 mm) .201 .148 .750 4 1/4 2-1/2 2326M 54.90 2326M-C3 61.10
.2362 (6 mm) .201 .148 1.250 4 1/4 4 2956M 62.40 2956M-C3 69.60
.2362 (6 mm) .201 .148 2.000 4 1/4 4 96066M 72.90 96066M-C3 80.10
1/4 .213 .158 .078 4 1/4 2-1/2 931516 47.20 931516-C3 53.40
1/4 .213 .158 .125 4 1/4 2-1/2 23116 47.20 23116-C3 53.40
1/4 .213 .158 .250 4 1/4 2-1/2 974316 49.50 974316-C3 55.70
1/4 .213 .158 .375 4 1/4 2-1/2 52916 50.10 52916-C3 56.30
1/4 .213 .158 .500 4 1/4 2-1/2 39716 51.70 39716-C3 57.90
1/4 .213 .158 .625 4 1/4 2-1/2 927616 52.20 927616-C3 58.40
1/4 .213 .158 .750 4 1/4 2-1/2 23216 54.90 23216-C3 61.10
1/4 .213 .158 1.125 4 1/4 2-1/2 41316 57.10 41316-C3 63.30
1/4 .213 .158 1.500 4 1/4 4 29516 63.50 29516-C3 70.70
1/4 .213 .158 2.000 4 1/4 4 960616 67.40 960616-C3 74.60
1/4 .213 .158 2.250 4 1/4 4 55216 71.40 55216-C3 78.60
1/4 .213 .158 2.500 4 1/4 4 929616 94.10 929616-C3 101.30
9/32 .240 .180 .375 4 5/16 2-1/2 52918 66.70 52918-C3 73.90
9/32 .240 .180 .750 4 5/16 2-1/2 23218 68.70 23218-C3 75.90
5/16 .266 .201 .187 4 5/16 2-1/2 23120 63.10 23120-C3 70.30
5/16 .266 .201 .375 4 5/16 2-1/2 52920 65.70 52920-C3 72.90
5/16 .266 .201 .500 4 5/16 2-1/2 39720 67.20 39720-C3 74.40
5/16 .266 .201 .750 4 5/16 2-1/2 23220 70.90 23220-C3 78.10
5/16 .266 .201 1.125 4 5/16 4 41320 80.40 41320-C3 89.10
5/16 .266 .201 1.500 4 5/16 4 29520 85.90 29520-C3 94.60
5/16 .266 .201 2.000 4 5/16 4 960620 91.10 960620-C3 99.80
5/16 .266 .201 2.250 4 5/16 4 55220 92.70 55220-C3 101.40
5/16 .266 .201 2.500 4 5/16 4 929620 92.70 929620-C3 101.40
3/8 .320 .241 .093 4 3/8 2-1/2 931524 68.10 931524-C3 76.30
3/8 .320 .241 .187 4 3/8 2-1/2 23124 68.10 23124-C3 76.30
3/8 .320 .241 .375 4 3/8 2-1/2 52924 69.70 52924-C3 77.90
3/8 .320 .241 .500 4 3/8 2-1/2 39724 69.70 39724-C3 77.90
3/8 .320 .241 .750 4 3/8 2-1/2 23224 70.90 23224-C3 79.10
3/8 .320 .241 1.125 4 3/8 4 41324 87.70 41324-C3 98.90
3/8 .320 .241 1.500 4 3/8 4 29524 90.10 29524-C3 101.30
3/8 .320 .241 2.000 4 3/8 4 960624 93.20 960624-C3 104.40
3/8 .320 .241 2.250 4 3/8 4 55224 95.70 55224-C3 106.90
3/8 .320 .241 2.500 4 3/8 4 929624 99.70 929624-C3 110.90
.3937 (10 mm) .335 .252 .375 4 7/16 2-3/4 52925 98.50 52925-C3 108.70
.3937 (10 mm) .335 .252 .750 4 7/16 2-3/4 23225 98.90 23225-C3 109.10
7/16 .373 .285 .500 4 7/16 2-3/4 52928 95.50 52928-C3 105.70
7/16 .373 .285 1.000 4 7/16 2-3/4 23228 98.90 23228-C3 109.10
.4724 (12 mm) .403 .308 .500 4 1/2 3 52931 124.40 52931-C3 136.60
.4724 (12 mm) .403 .308 1.000 4 1/2 3 23231 131.40 23231-C3 143.60
1/2 .427 .323 .187 4 1/2 3 23132 96.90 23132-C3 109.10
1/2 .427 .323 .500 4 1/2 3 52932 98.70 52932-C3 110.90
1/2 .427 .323 1.000 4 1/2 3 23232 101.90 23232-C3 114.10
1/2 .427 .323 1.500 4 1/2 6 41332 171.70 41332-C3 183.90
1/2 .427 .323 2.000 4 1/2 6 29532 175.70 29532-C3 187.90
1/2 .427 .323 2.500 4 1/2 6 960632 177.50 960632-C3 189.70
1/2 .427 .323 3.000 4 1/2 6 55232 187.70 55232-C3 199.90
1/2 .427 .323 3.500 4 1/2 6 929632 197.70 929632-C3 209.90
5/8 .533 .412 1.000 4 5/8 3-1/2 39740 204.70 39740-C3 216.90
5/8 .533 .412 1.500 4 5/8 3-1/2 23240 204.70 23240-C3 216.90
3/4 .640 .500 1.500 4 3/4 4 23248 281.70 23248-C3 294.90

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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