This durable metal bobbin case is designed for professional and industrial sewing machines, delivering smooth thread performance and consistent stitching results. Built for long-lasting use, it is an ideal replacement part for maintaining or restoring your Singer sewing machine.

Please note that bobbin cases are not universal and must match the correct machine class. Always refer to your machine manual to ensure proper compatibility before purchasing.

Key Features
Fits Singer Industrial Models – Compatible with 31-15 and 331K machines
Durable Metal Construction – Strong, reliable, and long-lasting
Smooth Thread Flow – Helps ensure even and consistent stitching
Professional Replacement Part – Ideal for repair and maintenance
Machine-Specific Fit Required – Must match correct bobbin class/style
Anti-Backlash Spring Not Included – Designed without backlash spring
Product Specifications
Brand: Universal/Generic
Material: Metal
Units: Sold Individually
Type: Replacement Bobbin Case

✔ Free shipping on orders over $99
✔ Ships from our USA (Georgia) office when in stock
✔ Weekly restocking from Japan, China, Bangladesh, and Turkey warehouses
✔ 3–7 business days handling time
✔ Compatible with multiple industrial sewing machines
✔ Carefully inspected before shipment

💡 Add more items to your cart to qualify for free shipping ($99+)

📩 Not sure if this fits? Send us your machine model or a photo — we’ll help you confirm.

⚠️ Please confirm your machine model before ordering