Singer 600 Series
Needle Clamp + Thread Guide & Screw

Part came from a Singer Touch & Sew 600 Sewing Machines
Other potential compatible sewing machines (according to other sewing machine parts dealers):

Singer: 1000 Futura, 1000G, 1030, 1036, 1040G, 1060, 1060E, 1200, 1411, 1411N, 1411U, 1425G, 1425N, 1425U, 2001, 2001A, 2005, 2010 Futura, 2010 Touchtronic, 401, 401A, 403, 404, 417, 500, 503, 600, 600E Touch & Sew, 603, 604, 620, 620E, 620E31, 625, 626, 626E1, 626E6, 626E7, 628, 629, 630, 630E, 635, 635E, 636, 638, 639, 640 Touch & Sew, 640E, 645, 646, 648, 649, 6700 Series, 6704, 6705, 6800 Series, 714, 717E, 717 School, 719, 724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 900 Futura, 900-3, 920, 920-3, 925, 925-3 Futura, Athena 2000 (2000A)