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Brake Booster Studs?

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Old Feb 20, 2008 | 10:37 PM
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Default Brake Booster Studs?

What size nuts go on the Brake booster studs where your master cylinder bolts up. I have lost mine. Where can I get replacements?
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Old Feb 21, 2008 | 01:38 PM
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I tried a regular 7/16 and it does not work.
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Old Feb 21, 2008 | 01:59 PM
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I don't have a car here to look at but maybe it is a fine thread 7/16 and not a course threaded stud.
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Old Feb 21, 2008 | 04:56 PM
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3/8-16 on my 69., Rick
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Old Feb 21, 2008 | 06:23 PM
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I tired a 3/8 x 16 and the bugger won't go. I have one of the original nuts and it looks like it is a elongated nut(not completly round) ???????
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Old Feb 21, 2008 | 06:53 PM
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Elongated on one end would be a self locking nut. How do the threads look, buggered up? Maybe you need to chase the threads.
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Old Feb 21, 2008 | 09:34 PM
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you can't chase the threads, I tried, because of the un-threaded tip off the stud. There are no threads to chase at the beginning of the stud.
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Old Feb 21, 2008 | 09:45 PM
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So are the threads the problem, are they messed up or not?

If you can't chase them, do you have a thread restoring file?
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Old Feb 21, 2008 | 10:39 PM
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The threads are ok. The original nut (I only have one) that I have will go on. however a regular 3/8 x 16 will not work. I have a 3/8 x 16 die but it will not work as I previously explained. I will post some pics.
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Old Feb 22, 2008 | 07:58 AM
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Never mind, I go a metric thread gage and it is a 10mm x 1.5 pitch, the gage just falls right in there, as the 3/8 x 16 was a little snug.
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