Screw for tension bracket. To fit machines models: PFAFF 335 Post Machine PFAFF 471 Post Machine PFAFF 474 Post Machine PFAFF 491 Post Machine PFAFF 571 Post Machine PFAFF 574 Post Machine PFAFF 591 Post Machine PFAFF 1571 Post Machine PFAFF 1574 Post Machine PFAFF 1591 Post Machine PFAFF 1593 Post Machine PFAFF 3587 Bed Machine Part Number: 11-250 085-25 SKU: PF335-BX2-PT17