You can find these parts from various retailers and specialized vintage sewing suppliers:
The number most commonly refers to a specific, specialized bobbin case (part number #125291) used in vintage Singer sewing machines . Key Technical Specifications
: Because of this specific left-pointing finger, it is not compatible with standard Class 15 machines or clones, where the finger typically points to the 1 o'clock position. 125291
: Collectors and restorers often look for original Simanco (Singer Manufacturing Company) stamped versions on sites like Old Singer Shop or Vintage Singer Parts .
This part is specifically designed to fit several classic Singer models, including: You can find these parts from various retailers
: This bobbin case features a "backward-latch" with a finger that points to the 11 o'clock position (left-pointing).
: Suppliers such as GoldStar Tool offer quantity discounts for bulk purchases. This part is specifically designed to fit several
: It helps prevent the bobbin thread from tangling or unraveling when sewing operations start and stop by ensuring the bobbin stops spinning quickly. Compatible Singer Models