I also saw a thread here from 2005 where someone lists a link for the 1/4 turn insert http://www.southco.com/en-us/81-82-85/82-35-313-55 but they do not give the southco part# for the screw and washer.
Posted 2013-08-10 1:19 PM (#473937 - in reply to #473886) Subject: Re: Breadwinner 1/4 turn screws
Joined: August 2013 Posts: 3
Thanks for the helpful links. In the first link there is a picture of what appears to be a countersunk flat slot screw, but I can't find it in the second sheet product specs. Plus I'm not an engineer so the chart and the mysterious value "U" make little sense. Anyone have a definitive answer on this? Thanks again.