New replacement upper thread tension spring.

Part # B2354 same as NS-7

Fits Babylock models: BL1050

Fits Brother models: 651, 661, 662, 681, 781, 1681, 1781

Fits Kenmore models: 158.430, 158.431, 158.432, 158.433

Fits New Home models: 366, 370, 443, 444, 447, 470, 535, 553, 556, 592, 670, 692

Fits Montgomery Wards models: UHT J 285

Fits Morse models: 4300, 4400, 4500

Fits Pfaff models: 204, 206, 208, 210

Fits Riccar models: 250, 414, 469FA, 500, 515, 525, 555FA, 555SU, 601, 606, 608, 666FA, 666SU, 706, 707, 777, 800R, 888, 900, 1570, 1900, 7500, 8400, 8500, 26000, SZ702 

Fits Sewmor models: 791, 810, 850, 870, 970, 6702, 6714, 6724

Fits Simplicity models: SL6220,

Fits Singer models: 5102, 5107, 5122, 5123, 5124, 5127

Fits Tacony models: 157B, 1603, 1604, 704, 2010, 2110, 301Z, 303SS, 316, 504, 514, 516, 601, 603, 608, 616, 663, 670, 693, 701, 703, 750, 752, 753, 763, 793, 816, 916, FA524, FA602, FA670, FA693, FA793