Re: Resurrecting a 1951 Henney-Packard Parts Car

Posted by HH56 On 2023/11/7 18:29:25

By 51 stock head fasteners would have been all studs with rolled fine threads of one size ---7/16-20. If you have bolts those are most likely standard cut threads and is probably an attempt at a fix because something happened to the original threaded holes.

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