Set Screw (545174452) for Singer 300U
Ensure the mechanical stability of your equipment with this Set Screw (Part #545174452). Specifically engineered for the Singer 300U and United Sewing Machine NR models, this fastener is designed to lock critical internal components into position, maintaining the precise timing required for industrial sewing.

Key Features & Benefits
High-Torque Security: Engineered to provide a deep, secure bite into the shaft or component, preventing slipping even under the intense vibration of high-speed production.

Precision Machined: Cut to the exact specifications of part #545174452, ensuring the threads engage smoothly and provide maximum holding power without backing out.

Hardened Steel Construction: Manufactured from industrial-grade tool steel to resist the rounding of the head and the stripping of threads during installation or adjustment.

Corrosion Resistant: Treated with a protective finish to withstand the oils and humidity common in industrial manufacturing environments.

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.