Original Feed Dog & Screws - Singer Part # 172027
Singer Original Feed Dog and Screws, part #172027, are compatible with models 327, 328, 329, 337, 338, 347, 348, 353, 354, 360, 362, 366, 367, 401, 401A, 403, 403A, 413K, 413K13, 416K, 418, 457, 466, 476, 477, 478, 500, 500A, 503 and 503A.