Singer 252 Fashionmate thread tension (graduated, adjustable) complete #37988-408. Plus upper thread guide #37990 and thread guide #44392 with set screw. Price includes shipping to lower 48. Tested and working parts return for refund if fails on your Singer 1247, 1263, 1280, 1288, 1802, 1803, 1812, 1852, 1862, 1872, 1873, 237, 239, 240, 2404, 241, 242, 2430, 247, 247AP, 248, 250, 251, 252, 257, 258, 259, 288, 300, 3101, 3102, 3103, 3105, 3140, 337, 347, 360, 400, 401, 401A, 403, 404, 4522, 4525, 4526, 4528, 4530, 4538, 4825, 4828, 4830, 500, 502, 507, 509, 513, 522, 527, 533, 543, 600, 6021, 603, 604, 6102, 6104, 6105, 6106, 6110, 6112, 6114, 6115, 6116, 6120, 6122, 6124, 6125, 6126, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 620, 620E, 620E31, 6201, 6202, 6211, 6212, 6214, 6215, 6217, 6221, 625, 626, 628, 629, 630, 630E, 635, 635E, 636, 638, 639, 640E, 645, 646, 649, 6606, 6610, 7100, 7101, 7102, 7105, 7108, 7110, 7146, 7174, 7184, 7186, 8500, 8600, 8614, 8734, 8834, 9502, 9505, 9518, 9606, 9608, 9612, 9618 or 9900 model.