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Old 10-10-2007, 07:10 AM   #1
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what size drill bit?


I need to drill and tap a hole, the bolt size is 7/16, what size drill bit would I use to do this?

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Old 10-10-2007, 07:45 AM   #2
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what size drill bit?


with 7/16-14 use 23/64
with 7/16-20 use 25/64

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Old 10-10-2007, 07:16 PM   #3
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what size drill bit?


Here is a tap drill chart that will size any hole you need to tap.

http://www3.telus.net/public/aschoepp/tapdrill.html
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Old 10-11-2007, 06:23 AM   #4
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what size drill bit?


Nice site joed, you have compiles a lot of useful information there. I do have one question...on the Electrolytic Rust Removal page there's a reference sodium carbonate, i.e. washing soda. Is there a common off the shelf name for that product? If not where does one acquire it?
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