On Wednesday, March 16, 2016 at 8:27:05 PM UTC-4, wrote:
On Wed, 16 Mar 2016 16:53:22 -0700 (PDT), wrote:

On Thursday, April 16, 1998 at 9:00:00 PM UTC-10, Ron wrote:
I'm repainting my siding and in a few places there are nail heads with a
bit of surface rust. How do I prep these for painting? They are too hard
to remove and replace with galv. nails. Thanks
--
Ron
Please remove XX to reply via E-mail.

Any sanding or sealing will ultimately result with the rust returning. Remove the entire nail head. Use the drill bit available on nailheadgone.com. Best way to deal with nail heads.
hit them with a brush-full of "extend" rust converting primer, then
paint over them. Knock off as much rust as you can first.

Extend was recommended 18 years ago when the question was first asked. If it's still
around, it must be good. ;-)

Personally, I prefer Extenze. Of course, it hurts a bit when I knock the rust off.