OEM Crank Shaft Knob (Part #541393). Specifically manufactured for the Singer 20U series, this authentic part ensures the precise fit, feel, and durability that only a manufacturer component can provide.

The crank shaft knob is essential for manual adjustments and controlling the mechanical timing of your machine. By choosing a part, you ensure that the internal threads and grip surface meet the exact engineering standards required for professional industrial use.

Key Features & Benefits
Authentic OEM Quality: A replacement part designed to provide a perfect fit and seamless operation with your Singer 20U.

Precision Grip: Features the original factory texture and ergonomic shape, providing maximum control when making manual adjustments.

Superior Longevity: Built from high-quality, heat-resistant materials that outperform generic alternatives in high-use environments.

Smooth Mechanical Action: Engineered to eliminate slipping or wobbling on the shaft, protecting the integrity of your machine's adjustment 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.