Singer Bobbins Metal Durable for 16U, 31K, 331K Machines - #2996

Keep your sewing machine running smoothly with these metal Singer bobbins, part number 2996. Sold in a convenient 10 pack, these bobbins are designed for select vintage and industrial-style Singer machines that use the uncommon bobbin class specified in the product details.

With an outside diameter of 20.6 mm and a thickness of 11.7 mm, this replacement bobbin is built for accurate fit and dependable thread supply. It is compatible with a wide range of Singer models, including many 16 Class, 16U, 31 Class, 32-45, 331K, 44 Class, 46K, 51, 58, 68, 69 Class, and 78 Class machines.

Important compatibility note: this bobbin is not compatible with Singer 31-20. Please verify your machine manual or existing bobbin measurements before ordering to ensure proper fit.

• Part number: 2996
• Alternate part numbers: 6018, 212C
• Material: metal
• Sold as a 10-pack
• Bobbin size: 20.6 mm outside diameter x 11.7 mm thickness

Choose these replacement bobbins when you need a reliable, machine-specific supply for consistent stitching and efficient sewing workflow.