Re: FOURTY !!!!! Mile (40 mile) Survivor 1980 Z-28
They are some kind of flare nut. Saw them many times when replacing idler arms, center links, and tie rod ends when I used to turn wrenches back then.
No cotter pin needed.
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Rick
1966 Chevy Caprice 427-390
2012 Chevy Camaro RS Convertible
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