this ain't a car but..look at a skateboard truck sometime and tell me what they call that stud that holds the base-[k frame] plate to the hanger-[control arm]=it's called a king pin, and his is stripped out.
He might tow it to my house this weekend so I can fix it.
Whats more important is helping him fix his car, not nit picking proper terms.
I see less 'help' happening when that kind stuff starts up...