Nylon M5

by Blue Blur » Wed Apr 29, 2009 22:32 22
The windshield plastic screws are 5 mm X 0.8 X 18 mm long, 0.8 being the thread pitch. Nylon screws that size 20 mm long are advertised at www.smallparts.com and www.rapidonline.com in quantities of 25 to 100 for less than a nickle apiece plus postage.
5 mm = 0.197 inch, .007 larger than a #10 machine screw (0.190") and 0,8 mm pitch = 31.75 threads per inch. If you accidently found a screw in your tool box that fit is was probably a #10-32 which will screw into the windshield nut but would have less engagement.
The heads on the above advertised screws are probably a smaller diameter than the originals but the 20 mm length would leave room for a nylon washer.
The rubber inserts with the nuts for the windshield screws pull out of the tupperware pretty easy and probably would in a crash. Perhaps the plastic screws were just an attempt to keep from breaking out the drilled holes in the windshield so it could be reused if otherwise undamaged.
Blue Blur
Super Poster