In a message dated 10/9/04 2:24:12 AM Eastern Daylight Time,
jhecht@ALUM.MIT.EDU writes:

> How come they don't have a normal nut and bolt on the windshield wiper,
> instead of that very finely serrated post?
>
>
>

they do have a nut.   all wipers arms have serrated studs, even american
cars.

chris