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19Fordy · 04-16-2020, 10:31 AM

Run a file across a nut and you will probably find they are mild steel. Or just tap one with a prick punch.
Doubt if Henry Ford or other manufacturers were using hardened nuts due to cost. Plus, they weren't needed. I bet lug nuts are the same steel as head nuts..

04-16-2020, 10:31 AM	#5
19Fordy Senior Member Join Date: May 2010 Location: Coral Springs FL Posts: 10,925	Re: Rockwell of Ford head stud nuts Run a file across a nut and you will probably find they are mild steel. Or just tap one with a prick punch. Doubt if Henry Ford or other manufacturers were using hardened nuts due to cost. Plus, they weren't needed. I bet lug nuts are the same steel as head nuts..