The X004BJZ769 / 366671 Winding Reel Retaining Spring It is a metal part used on the bobbin winder shaft of various household sewing machines. Its main function is to help Hold the spool firmly on the shaft while winding the thread., preventing the coil from becoming loose, shifting, or rotating unevenly.
At Orduz USA We handle this part using the main reference X004BJZ769. Furthermore, in terms of form and function, it belongs to the product family identified by the reference number 366671, known in English as Bobbin Winder Spindle Spring. The old reference 5987 It is also listed as having been replaced by 366671, so it can be useful as a cross-reference for searching for replacement parts.
Function of the Winding Spring
During the unwinding process, the spool must remain properly secured to the shaft. For this reason, the retaining spring exerts pressure on the spool and helps keep it stable as it rotates.
When this spring is lost, bent, or loses its tension, problems such as the following may occur:
- The coil is loose on the shaft.
- Irregular winding.
- A coil that comes off during the process.
- Excessive vibration or movement.
- Difficulty filling the bobbin evenly.
Therefore, replacing the worn spring can help restore proper operation of the winding system.
Related References
This product can be identified by the following part numbers:
X004BJZ769, 366671, and 5987
The reference 366671 It is widely marketed as a spool shaft spring, whereas 5987 It appears in old catalogs as a part number that has been replaced by 366671.
Compatibility with SINGER machines
The reference 366671 It is specifically designed for machines SINGER 1525 and 1725. In addition, specialty retailers describe it as a spool compatible with a wide variety of home sewing machine spool holders.
For this reason, this replacement part can be found in various winding systems that use a similar shaft and retaining mechanism.
Compatibility with BROTHER machines
The reference 366671 It has also been reported for various Brother models, including:
Brother 320, 461, 761, 7029, PS1200, VX707, VX710, VX760, VX780, VX920, VX940, VX950, VX970, VX980, VX1010, VX1020, and XL711.
In addition, this type of spring is sold as a replacement part for brands such as Singer, Brother, Kenmore, Necchi, Riccar, Baby Lock, Bernina, Elna, Janome/New Home, Juki, Pfaff, Simplicity, Viking, and White, although exact compatibility must be verified on each machine.
When should this spring be replaced?
With continued use, the spring may lose tension, become deformed, or come loose from the spool shaft. As a result, the spool may no longer be held securely in place.
It is recommended that you inspect this part when:
- The coil is not securely fastened to the shaft.
- The winder is spinning, but the bobbin is moving.
- The coil slips off the shaft.
- The thread is wound unevenly.
- The original spring is bent, broken, or missing.
Main features
- Orduz's main reference: X004BJZ769
- Compatible part number: 366671
- Related older reference: 5987
- Product Name: Reel Retaining Spring
- English name: Bobbin Winder Spindle Spring
- Material: Metal
- Application: Coil winder shaft
- Function: Hold the spool in place while unwinding
- Usage: Repair and Maintenance of Household Sewing Machines
Important Information Before Purchasing
Although the reference 366671 It is used in many winding machines; we recommend comparing the shape, size, and bends of the original spring, as shown in the product photos before making the purchase.
If you have questions about the compatibility of the Retaining Spring X004BJZ769 / 366671, you can send Orduz USA a photo of the winder shaft or the exact model of your machine to help you identify the correct replacement part.
Available from Orduz USA with shipping to various locations in the United States.
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