Winder Shaft with Retaining Spring X004BJZ769 / 366671

The X004BJZ769 / 366671 Reel Retaining Spring It is a metal replacement part designed to be installed in the coil winder shaft on various household sewing machines. Its main function is to keep the bobbin securely in place on the spindle while the thread is being wound.

At Orduz USA We carry this replacement part primarily under the part number X004BJZ769. It is also related to the reference 366671, known commercially as Bobbin Winder Spindle Spring, as well as with the old reference 5987.

Function of the Retaining Spring

During winding, the bobbin rotates at high speed on the shaft. For this reason, it must be held securely in place so that the thread is distributed evenly.

The X004BJZ769 Retaining Spring It applies pressure to the coil and helps prevent it from becoming loose, shifting, or coming off during operation. Therefore, although it is a small part, it plays an important role in the winding system.

When this spring is missing, bent, or has lost its tension, the winder may have difficulty holding the spool properly.

Compatible references

This replacement part may be listed under the following part numbers:

X004BJZ769, 366671, and 5987

The primary reference used by Orduz USA is X004BJZ769. However, additional references are included to make it easier to identify the replacement part and to help locate equivalents listed in different sewing machine catalogs.

Application on SINGER machines

The reference 366671 It has been reported for various household appliances, including models SINGER 1525 and 1725.

In addition, this type of spring can be found in other models that use a winding mechanism with a shaft and retainer of a similar design. For this reason, we always recommend checking the shape of the original part before purchasing.

Compatibility with BROTHER machines

This family of springs is also used in various Brother models, including:

Brother 320, 461, 761, 7029, PS1200, VX707, VX710, VX760, VX780, VX920, VX940, VX950, VX970, VX980, VX1010, VX1020, and XL711, among others.

In addition, similar applications exist for household machines from other brands. However, compatibility must be confirmed based on the model and the shape of the winder shaft.

When should you replace the reel spring?

It is recommended that you inspect or replace this part when situations such as the following arise:

• The coil sits loosely on the shaft.
• The bobbin moves excessively during winding.
• The thread is wound unevenly.
• The coil comes off the shaft.
• The spring is bent or deformed.
• The original pier was lost.
• The retainer no longer exerts enough pressure.

Therefore, installing a spring that is in good condition can help restore the reel to proper operation.

Main features

• Orduz's main reference: X004BJZ769
• Equivalent reference: 366671
• Related older reference: 5987
• 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
• Machine type: Compatible home sewing machines

Important Information Before Purchasing

Before placing your order, we recommend comparing the shape, bends, and size of the original spring along with the published photographs.

The photograph showing it mounted on the winder shaft is used to illustrate the location and method of installation of the dock. The product sold is the retaining spring; the complete shaft is not included, unless the publication expressly states otherwise.

If you have any questions, you can send them to Orduz USA a photo of the winder shaft or the exact model of your machine to help you verify compatibility.

X004BJZ769 / 366671 Reel Retaining Spring available from Orduz USA with shipping to various locations in the United States.