[mr48chev]

Try a round head machine screw. One that uses an Allen wrench might be the best choice if you can find one.

Jweb posted faster than I did, you should be able to find similar screws to the ones he showed at the local bolt supply store or in the little pull out trays over the bolt bins at ACE hardware. I've got to go to the Local Ace today so I'll check there but most well equipped Ace stores should have them.

I remember that fight when I first bought my 48 in 1973 and had to change the broken window (s) in it. We actually drove it to Tulsa with speed shop decals covering a hole in the passenger side window. one on the inside and one on the outside. I replaced the window a month or so later and had to do some hunting before I found screws that worked. Main thing I remember is that the first ones I tried had too big of heads on the screws.