Singer & Pfaff Needle Set Screw (Part #504112 / #504051)
Ensure your sewing machine stays precise and secure with this high-quality Needle Set Screw. This essential hardware component is a direct replacement for both Singer and Pfaff part numbers, ensuring your needle remains firmly locked in the needle bar during high-speed stitching.

Product Overview
The needle set screw is a small but critical part of your machine’s timing and safety. A worn or stripped screw can lead to needle strikes, skipped stitches, or damage to your needle plate. This dual-compatible screw is engineered for a perfect fit and long-lasting grip.

Key Features
Dual Compatibility: Fits both Singer and Pfaff industrial and domestic models (replaces part numbers 504112 and 504051).

Precision Threading: Designed to prevent loosening caused by machine vibrations.

High-Strength Steel: Hardened metal construction resists stripping, even with frequent needle changes.

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.