Lower Knife (Part #2149) for Union Special 2100 Series Sewing Machines
Achieve a clean, professional trim with the Lower Knife (Part #2149). This authentic-grade stationary blade is engineered specifically for the Union Special 2100 Series, including portable bag closers and high-speed industrial chainstitch machines. As the "anvil" of the cutting system, the 2149 Lower Knife provides the rigid, precise surface necessary for the upper blade to perform a flawless shear action, ensuring that thread tails and fabric excess are trimmed neatly every time.

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.