Check Spring Heavy 221175 is designed for Singer 211G, 211U, 211W, and Singer 111W sewing machines. It controls thread tension smoothly during stitch formation, helping maintain balanced and consistent stitching performance in industrial sewing.
This heavy-duty spring is a key part of the upper tension system, ensuring proper thread recovery and preventing loose or uneven stitches during operation.
Key Features:

Premium quality heavy-duty check spring (Part 221175)

Compatible with Singer 211G, 211U, 211W, and 111W models

Ensures stable upper thread tension control

Improves stitch consistency and quality

Helps prevent thread slack and irregular stitches

Durable construction for long-lasting industrial use

Orders are typically processed within 1–3 business days.

We ship from our Georgia, USA warehouse. If an item is temporarily unavailable in the U.S., we source it through our global supplier network and will notify you of the estimated lead time.

Free shipping is available on U.S. orders over $99.

Once your order ships, you will receive a tracking number by email.

For urgent orders or shipping questions, please contact us before placing your order.

We stand behind the quality of the products we sell.

• Genuine OEM parts are covered by the manufacturer's warranty where applicable.

• Aftermarket and generic parts are covered against manufacturing defects.

• If you receive a damaged, defective, or incorrect item, please contact us within 30 days of delivery.

• Warranty does not cover damage caused by improper installation, misuse, normal wear, or modifications.

If you have any questions, our support team is happy to help before or after your purchase.