Slide Plate Spring - Singer Part # 163478
-New replacement slide plate spring.
-Fits Singer models 600, 603, 604, 620, 620E31, 625, 626, 628, 629, 630E, 635, 636, 638, 639, 640E, 645, 646, 648, 649
-Part # 163478
-Works with slide plate # 163477
-New replacement slide plate spring.
-Fits Singer models 600, 603, 604, 620, 620E31, 625, 626, 628, 629, 630E, 635, 636, 638, 639, 640E, 645, 646, 648, 649
-Part # 163478
-Works with slide plate # 163477