Originally Posted by OurWorkbench

I'm wondering which screw you are referring to. Maybe it is 552 or 251 as seen at https://www.manualslib.com/manual/15...age=28#manual? Unfortunately, neither is listed on https://www.singersewinginfo.co.uk/screw_threads Sometimes a screw can be used in different places. I know I got an extra long needle clamp screw that would work on a stitch length regulator. Maybe if your look for 55619 or 55620 there may be one with it?