Lock Spring Plate (415016N) for Singer 300U
Maintain the mechanical integrity of your machine’s tension or locking systems with this Lock Spring Plate (Part #415016N). Specifically engineered for the Singer 300U and United Sewing Machine NR models, this plate provides the precise tension and structural support necessary for reliable industrial operation.

Key Features & Benefits
Optimized Tension Control: Designed to provide consistent spring pressure, ensuring that locking mechanisms or tension assemblies remain engaged during high-vibration sewing.

High-Resilience Spring Steel: Manufactured from premium-grade, heat-treated steel to prevent permanent deformation or "flattening" over time.

Precision Stamped: Built to the exact dimensional specifications of part #415016N, guaranteeing a perfect fit and proper clearance within the machine's internal housing.

Wear-Resistant Finish: Features a smooth, burr-free surface to prevent friction against moving parts, extending the life of the entire assembly.

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.