Case Key, Singer Featherweight 221 (Vintage Original) newfw ) The new pins must

)  The new pins must be flared on the open end

whereas the Service Manual has more expanded and exploded views of the Featherweight parts

Centennial

3/8” straight

Case Key, Singer Featherweight 221 (Vintage Original) newfw ) The new pins mustThis is an original key for a Singer Featherweight 221 and 221K case and will fit most case styles. Be sure to view the lock and compare the opening with the key inserted. If you need help identifying if this is the key you need, click the tutorial tab to view the history of the different style of cases and their style of unique keys. Watch video tutorial for more information. *This key is not the style for the green case suited for the White