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| The size of drill? |
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| Jasonb:
Just read your post again and I gave the size for 4-40,the first on your list of 3, was a bit early in the morning. This site has a lot of thread sizes and the tapping drills are in metric http://www.gewinde-normen.de/en/index.html J |
| Lew_Merrick_PE:
--- Quote from: saw on January 10, 2011, 03:51:11 PM ---Thanks Jasonb Where can I find a tabel for all of those drills and tabs. I am use to mm so this is hard for me. --- End quote --- Benni, Take a look at the document titled Pilot Hole Considerations posted at http://www.scribd.com/Lew%20Merrick. It will probably tell you more than you ever wanted to know on the subject. There is also a document titled UN Thread Data Chart that covers the Unified National (American standard inch-based) screw threads in fair detail. |
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