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Old 02-12-2018, 01:29 PM   #11
1930-Pickup
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Join Date: Mar 2017
Posts: 529
Default Re: Why no lock-washers?

If you need a solution to exhaust manifold nuts backing off, you could use interference-fit brass nuts. This was a fairly common item and solution in years gone by. They would have cost a few cents more, so that's probably why Henry didn't use them
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