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Combination Drill/Thread Mills

Photo is an illustration of an exemplary tool

Combination Drill/Thread Mills


  • Designed for combined drilling, threading, thread relief cutting, and chamfering
  • One cutter for 4 different operations saves time on tool changes and leaves more room in the tool carousel
  • Length of cut includes transition angle, allowing for optional 45° chamfer pass
  • Optimized for cutting non-ferrous materials such as aluminum, unfulfilled plastics, copper, brass, and bronze alloys
  • Recommended for cutting, threading and chamfering though holes
  • 3 flutes to center
  • Cuts internal 60° UN threads
  • 90° included back chamfer
  • Solid carbide
  • CNC ground in the USA   
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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.

THREAD
SIZE
DRILL
DIA.
LOC THREAD
DIA.
DIA. OF
SECONDARY
POINT
ANGLE
LENGTH OF TIP LENGTH OF
THREAD RELIEF
LENGTH OF
TIP CHAMFER
SHANK
DIA.
OAL UNCOATED TiB2 COATED
D1 +.0005"/-.0005" L2 +.030
-.000
D3 +.0005"/-.0005" D4 L3 L4 L5 D2 L1 TOOL # PRICE TOOL # PRICE
4-40 .0876 .2614 .085 .0382 .0586 .0250 .0247 1/8 2 820616 107.40 820616-C8 117.40
6-32 .1076 .3128 .100 .0507 .0714 .0312 .0284 3/16 2 820622 110.80 820622-C8 120.90
8-32 .1336 .3490 .115 .0767 .0775 .0312 .0284 3/16 2 820628 118.60 820628-C8 128.90
10-24 .1494 .4253 .120 .0803 .0949 .0416 .0345 1/4 2 820634 124.50 820634-C8 135.50
10-32 .1596 .4172 .120 .1027 .0836 .0312 .0284 1/4 2 820636 124.50 820636-C8 135.00
1/4-20 .2013 .6345 .180 .1224 .1180 .0500 .0394 3/8 2-1/2 820644 148.30 820644-C8 160.00
1/4-28 .2152 .6235 .180 .1531 .1024 .0357 .0310 3/8 2-1/2 820646 148.30 820646-C8 159.50
5/16-18 .2584 .7791 .240 .1729 .1385 .0555 .0427 3/8 2-1/2 820654 162.00 820654-C8 173.60
5/16-24 .2719 .7684 .240 .2028 .1234 .0416 .0345 3/8 2-1/2 820656 182.20 820656-C8 194.40
3/8-16 .3141 .9102 .285 .2205 .1607 .0625 .0468 1/2 3 820664 216.60 820664-C8 229.80
7/16-20 .3888 .9190 .335 .3099 .1617 .0500 .0394 1/2 3-1/2 820676 234.10 820676-C8 247.90
1/2-13 .4251 1.075 .350 .3145 .2055 .0769 .0553 5/8 3-1/2 820684 241.60 820684-C8 270.90

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.

 

Combination Drill / Thread Mills

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