The BOBBIN CASE (Part #800257) is a genuine JACK original replacement part designed for JACK 5550 F3, F5 and F6 series lockstitch machines, as well as Brother B714, B735 and Consew 210, 218 series models. Manufactured to OEM specifications for precise fit and reliable performance. Equivalent Part Numbers JACK: 800257 JUKI: B1837-012-0a0 Compatible Machines This part fits the following industrial sewing machine models: JACK: 5550 F3, F5, F6 BROTHER: B714, B735 CONSEW: 210, 218, 219, 220, 230, 2230, 231, 290310, 7360, CN2230R JUKI: DDL-127, DDL-227, DDL-227-A, DDL-227-M, DDL-227-W, DDL-541, DDL-541N, DDL-542, DDL-543, DDL-545, DDL-545W, DDL-552, DDL-552A, DDL-552W, DDL-553 SINGER: 188K, 191, 241, 241-11, 241-12, 241-13, 245, 251, 281, 281-83, 291U, 366K, 391U, 400W, 402W Technical Specifications Brand JACK Part Number 800257 Part Type Bobbin Cases Condition New – OEM Original Looking for a replacement bobbin case for your JACK 5550 F3 or F5 lockstitch machine? This genuine OEM part is also compatible with Brother B714, Consew 210 and Juki DDL-127 series machines. Shop with confidence — all parts ship from Miami, FL. ⚠️ Compatibility Notice: Always verify your machine model and subclass number before ordering. Part numbers and compatibility are provided as a reference only. Supra Sewing is not responsible for purchases made without confirming compatibility with your specific machine. All sales on replacement parts are final.
