Bobbin Winder Springs for Singer 500, 503 Rocketeer - Parts # 172552 & 172555
Bobbin Winder Springs for Singer 500, 503 Rocketeer - Parts # 172552 & 172555 - Return & Release Springs #172552 & 172555 is backordered and will ship as soon as it is back in stock.
Free Shipping on USA orders over $45
Free Shipping on USA orders over $45
Fast, reliable shipping for sewing machine parts and accessories
At Central Michigan Sewing Supplies, we work hard to get your orders packed and shipped quickly. Most products are stocked at our Florida location and ready for shipment.
Order Processing
Orders are typically processed and shipped within 1–2 business days, excluding weekends and holidays. Many orders ship the same business day.
Orders placed on weekends or holidays are generally processed on the next business day.
United States Shipping Rates
We offer several shipping options at checkout so you can choose the service that best meets your needs.
| Shipping Method | Cost | Estimated Transit Time |
|---|---|---|
| Economy Shipping | $6.25 on orders under $45 | Varies by carrier and destination |
| Free Economy Shipping | FREE on orders $45 or more | Varies by carrier and destination |
| USPS Ground Advantage | $8.99 | 3–5 business days |
| USPS Priority Mail | $11.99 | 2–3 business days |
| USPS Priority Mail Express | $34.99 | 1–2 business days |
Free Economy Shipping is available on U.S. orders of $45 or more, including APO/FPO addresses. Eligibility is based on the merchandise subtotal after discounts and before taxes and shipping charges.
Customers who qualify for free shipping may still choose a paid shipping service at checkout.
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For Economy Shipping and Free Economy Shipping, we select the shipping carrier and service based on the package size, weight, destination, and available shipping options.
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Economy Shipping is not necessarily slower than our paid shipping options. Many Economy orders ship via USPS Ground Advantage.
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We currently ship internationally to Canada, Australia, and New Zealand.
International shipping rates are calculated at checkout based on the destination, package weight, and available shipping services.
Orders are typically processed within 1–2 business days.
International deliveries generally take approximately 7–14 business days, although delivery may take up to 30 days or longer in some circumstances, particularly for remote destinations or customs delays.
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APO/FPO Shipping
We ship to APO/FPO addresses using eligible USPS services. Free Economy Shipping is available on qualifying U.S. orders of $45 or more.
Delivery times to military addresses may be longer than standard domestic estimates.
Shipping Delays
While we make every effort to ship orders promptly, delivery estimates may be affected by weather, holidays, carrier disruptions, customs processing, or other circumstances beyond our control.
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Contact Us
Central Michigan Sewing Supplies
838 S. Tamiami Trail
Osprey, FL 34229
Email: chris@vintagesingerparts.com
Phone: (941) 441-8193
Customer service phone hours: Monday–Friday, 9:00 AM–5:00 PM Eastern Time.
We appreciate your business and take pride in carefully packing and shipping your sewing machine parts and accessories.
Description
Description
These bobbin winder springs are designed for Singer 500 and 503 Rocketeer sewing machines. The bobbin winder mechanism uses two springs to control the winding process: the return spring brings the winder back to its rest position after winding, while the release spring disengages the winder when the bobbin is full. These springs are essential for proper bobbin winding operation.
Specifications:
- Return Spring Part Number: 172552
- Release Spring Part Number: 172555
- Type: Replacement (aftermarket)
- Function: Controls bobbin winder engagement and return mechanism
Available Options:
- Return & Release Springs Set - Both springs (Part # 172552 & 172555)
- Return Spring - Part # 172552 only
- Release Spring - Part # 172555 only
Machine Compatibility:
Fits Singer 500 Series (Rocketeer): 500, 500A, 503, 503A
Function & Benefits:
The bobbin winder springs work together to ensure smooth, automatic bobbin winding. The return spring (172552) pulls the winder mechanism back to its rest position after winding is complete, while the release spring (172555) automatically disengages the winder when the bobbin reaches full capacity, preventing overwinding and thread breakage. Replace worn, broken, or missing springs to restore proper bobbin winding function.
Installation Note:
Replace damaged, stretched, or missing bobbin winder springs to restore proper winding operation. Ensure springs are correctly installed in their designated positions for proper engagement and release function.
Specifications
Specifications
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Payment & Security
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