Just wanted to say that I was able to clean the contacts on my '95 Blazer ignition switch rather than purchasing a new switch to fix the intermittent no start problem.

Also, I went to the hardware store and got some #6 sheet metal screws (6 cents each) with a combination socket head / flat head screwdriver slot to replace the reverse Torx head screws. The #6 screws are slightly smaller in diameter than the original screws and require a little more care when starting the screws, but I think they'll be ok. I drove about 100 miles (bounced through a small cornfield, too) w/o the screws and the ignition switch didn't fall out, so I guess the screws will just be added protection.

If you look close at the threads, I think you'll find they're metric.

If you look close at the threads, I think you'll find they're metric.

I'm sure you're right. My hardware store didn't have metric screws, so I skimped and used the next best thing.