Vertical Metal Bobbin Case SINGER Class 15 (Ref. 15277)

The vertical metal bobbin case is the classic part where the bobbin is inserted in traditional oscillating hook (front and side-loading) machines. When this metal holder wears out, dents, or the tension spring breaks, the machine starts to loop the thread underneath, break the thread, or create irregular stitches.

This original replacement part restores millimeter-precise tension control and perfect thread gliding to your machine. It is the bobbin case universally known as "Class 15", compatible with iconic classic SINGER machines (the old black machines, pedal or motorized) and hundreds of other brands that adopted this same robust oscillating system.

(Alternative compatible references: 15277, BC-HA1, 15277Z, J01313, JO1313Z)