HOOK DRIVER (163246)The hook driver nut is not included with this part, and is no longer available from any supplier.Singer Sewing Machine Models:600, 603, 604, 620, 620E31, 625, 626, 628, 629, 630, 630E, 635, 635E3, 635E6, 635E7, 636, 638, 639, 640E, 645, 646, 648, 649, 714, 717 School, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 1000G, 1060, 1040G, 1411N, 1411U, 1425N & 1425U163246
