Some Singer sewing machines models that fits this gear:
204, 351, 358, 604, 606, SPRINT, 290, 495, 496, 502, 507, 509, 513, 514, 518, 522, 527, 533, 538, 714, 717, 719,724, 734, 737, 750, 755, 756, 758, 770, 774, 775, 776, 778, 900, 920, 1030, 1036, 1040, 1411, 1425, 1482, 1485, 1486, 1488, 1490, 1492, FUTURA 2000-2001-2010, 2102, 2105 MERRITT, 2106, 2108, 2110, 2110 MERRITT, 2112, 2114 MERRITT, 2118 MERRITT, 2118, 2205, 2205, 2210, 2220, 4552, 6010, 6102, 6103, 6104, 6105, 6106, 6110, 6116, 6116, 6120, 6230, 6231, 6232, 6233, 6234, 6235, 6238, 6240, SERENADE 10-20-30-40, 6242, 6266, 6267, 6268, 6269, SYMPHONIE 100-200-300-400, 6408, 6412, 6416, 6423, 7028, 7102, 7104, 7105, 7110, 7136, 7146, 7166, 7184, 7186, 8134, 8214, 8518, 8602, 8605, 8606, 8610, 8614, 8618, 9005, 9008, 9010, 9012, 9012, 9015, 9018, 9020, 9022, 9027, 9028, 9032, 9042, 9110, 9111, 9113, 9117, 9123, 9124, 9130, 9133, 9137, 9143, HARMONIE 300-400, 9210, 9217,9224, 9240, CONCERTO 2-3-4, 9423, TEMPO 80, 9432, 9514, 9518, 9602, 9605, 9606, 9608, 9610, 9612, 9614, 9618, 9900