Replacement thread tension assembly complete.
Part # 422403-455
Fits Singer models 1247, 1263, 1280, 1288, 1802, 1803, 1812, 1852, 1862, 1872, 1873, 237, 239, 240, 2404, 241, 242, 247, 247AP, 248, 250, 251, 252, 257, 258, 259, 288, 300, 2430, 3101, 3102, 3103, 3105, 3140, 337, 347, 360, 400, 4522, 4525, 4526, 4528, 4530, 4538, 4828, 4830, 502, 507, 509, 513, 522, 527, 533, 543, 6021, 603, 604, 6102, 6104, 6105, 6106, 6110, 6112, 6114, 6115, 6116, 6120, 6122, 6124, 6125, 6126, 6130, 6136, 6146, 6152, 6156, 6174, 6184, 6201, 6202, 6211, 6212, 6214, 6215, 6217, 6221, 6606, 6610, 7100, 7101, 7102, 7105, 7108, 7110, 7146, 7174, 7184, 7186, 8500, 8600, 8614, 8734, 8834, 9502, 9505, 9518, 9606, 9608, 9612, 9618, 9900