Fits most Japanese style sewing machines that use 110 volt small base screw in bulb. LED bulbs have brighter light and last many times longer than original filament bulbs.
Machines taking a 643 base:
Babylock B15, B17, B21, BL37, BL200, BL202, BL302, BL400, BL402, BL415, BL500, BL700, BL702, BL713, BL722, BL1500, BL1550, BL1556, BL1750, BL2000, BL2150, BL2160, BL2200, BL2500, BL2800, BL3500, BL5020, BL6200, BL8500, BL80, BL90, DBL34-60, BLSE200, BLSE300, BL4-728, BL4-728D, BL4-736, BL4-436D, BL4-738, BL4-738D, BL4-738NS, BL4-838D, BL5260D, BL5280E, BL5280NS, BL5280ED, BL5360ED, BL5370ED, BL5380ED, BLE1, BLE1AT, BLE1DX, BLE1LX, BLE1SX, - Bernette 50, 55, 56, 60, 70, 75, 82E, 705, 715, 720, 740E, Bernina sergers 700D, 800D, 800DL, 1100DA - Brother 3034D, BS2145, BS2250, DZ1500F, LS1217, LS1717, LS30, LX3125 PQ1300, PQ1500S, PS1000, PS1800, XL2027, PQ1500 XL2600, XL3025, XL3100, XL3500, XL4040, XL4041, XL4041AV, XL4045, XL6452, XL6562, XR46, XR65T - Elna 100, 101, 102, 103, 104, 110, 120, 130, 140, 149, 150, 200, 220, 225, 230, 240 244, 244I, 245, 245I, 250, 255, 300, 410, 450, 1400, 1500 - Elnalock 604E, 614DE, 624DS,704-DEX, F3, F4, L1, L2, L4, L-4D, L-4DC, L5, L-5D, L-5DC - Europro 8260 - Juki MO103, MO134, - Necchi 522, 3101FA, 3102FB, 3204FB, 3205FA, 3354, 3355, 3537, 3620, 3832FA, 4575, 4595, 4795, 4825, 6010, 6011, 6022 - New Home 502, 552, 2015, 3015, 3018, 3023, 3123, 4052, 4618, 5018, 6000, 6019QC, 7312, Jem Gold 660, My Style 100, - Riccar R250, R650, RE640, R700, R750, 777, 900, 925, R1100, R1500, R1570, R1570FB, R1800 R1850, 1900, 1925, R3100, REC5900, REC6000, R7620 Riccarlock RL333, RL343, RL343DR, RL724E, RL739DE, 564DE - Simplicity SL237, SL1000, SL1200, SL1220, SL1250, SL1270, SL1400, SL2507, SL8020, SL9130, SL9150, SL9240, - Singer 3323, - Viking serger 440, 535D, - White 265, 510, 571, 1466, 1488, 1505, 1510, 1666, 1755, 1766, 1788, 1805, 1810, 1866, 1888, 1899, 1919, 1927, 2360, XL1760, White Superlock 1800 Alternative number 000008606, 3018021-05, 50021603, 7SCW, A6013535000, A6013800A00A, X53061050