When I removed the dash shield (#3638) in my 1915 roadster I found that it had been installed with a creative variety of fasteners, including one self-tapping sheet metal screw. What's correct? I haven't found any reference in the usual places.
Three round head wood screws.
John Regan can tell you exactly what size and whether they should be brass or steel for 1915.
http://www.funprojects.com/pdf/CA3638.PDF
Steve:
I sent you a PM concerning your question.
Dad used all kinds of Phillips screws he had on hand, but I don't remember him ever having a '15 Runabout.