Tension Thumb Nut 20225 for Seiko LSW-6LG, 6LG-T, 6LG-TA, 7LG, 7LG-T, 7LG-TA Sewing Machine
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Current pricing, availability, lead time, and machine compatibility
will be verified for your specific requirement.
Please send your machine model, required gauge or size, quantity, and clear photos of the machine nameplate or existing components when available.
Please send your machine model, required gauge or size, quantity, and clear photos of the machine nameplate or existing components when available.
🌎 International customers are welcome.
We serve customers worldwide. Depending on product availability, orders may be sourced or fulfilled through our USA, Singapore, or international supply network.
Please include your destination country and postal code so we can review the most suitable shipping option.
REQUEST A QUOTE
We serve customers worldwide. Depending on product availability, orders may be sourced or fulfilled through our USA, Singapore, or international supply network.
Please include your destination country and postal code so we can review the most suitable shipping option.
U.S. customers may also text the product link and photos to
+1 (770) 744-3831
Seiko Tension Thumb Nut (Part #20225)
Achieve precise, repeatable thread control with the Seiko Tension Thumb Nut (Part #20225). This authentic adjustment component is the primary interface for fine-tuning the upper thread tension on the Seiko LSW long-arm industrial series.
The tension thumb nut is responsible for applying calibrated pressure to the tension spring and discs. In heavy-duty sewing—such as automotive upholstery, sails, or heavy webbing—even a half-turn can be the difference between a perfect lockstitch and a loose seam. This Seiko part features a knurled grip and precision-cut internal threads designed to hold its position under the high-vibration environment of 2,500+ SPM (stitches per minute) operation.
Most in-stock orders are processed within 3 business days, Monday through Friday. Special-order and non-stock items may require additional handling time
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 promptly. Please see our Return & Refund Policy for eligibility, notification requirements, and applicable return terms.
• Warranty does not cover damage caused by improper installation, misuse, normal wear, Return & Refund Policy modifications.
If you have any questions, our support team is happy to help before or after your purchase.