I'm trying to figure out which pins will replace the ones have been holding the screens in place for the last 15-20 years. The frames are about 3/4 inches wide and measuring the holes, the 75-503 drill is about right.
Paul from SWISCO responded:
March 4, 2014
The pull pins that correspond to our 75-503 drill bit are our 70-008. Do thee look familiar to you?