New bobbin winder actuating cam for the Singer Touch & Sew models listed below, please note that this part is compatible with flat bed models only (use part #382820 for free arm models). Part #163788, for use with lever rod #445827-451 or #163786-656.

This cam fits the following Singer flatbed models:

290, 620, 625, 626, 628, 629, 630, 635, 636, 638, 639, 640, 645, 646, 648, 649, 737, 750, 755, 756, 758, 1040, 1411 and 1425