This Small Thumb Screw (#XC5817051) is guaranteed to fit select Babylock and Brother sewing machine models - BMP6, BMP8, BMP9, BMV10 Valiant, BMY6, BND9, BNT10, EMP6, PR1000, PR1055X, PR600, PR600II, PR600C, PR620, PR650, PR650C, and PR680W. Designed to provide reliability and compatibility, this screw is an ideal choice for your sewing machine.