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SKU: VO1786

Original Singer Complete Upper Tension Assembly - Model 301A - Black or Brown Cap

$ 29.95
Color: Brown

Free Shipping on USA orders over $45

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We pride ourselves on swift order processing and dispatch. Once your order is confirmed, we work diligently to get it ready for shipment, typically within 1–2 business days, with same-day shipping for orders placed before 2:00 PM EST.

Free Shipping

For US orders over $45, we offer free shipping as our way of showing appreciation to our valued customers. This applies after discounts, taxes, and shipping are calculated.

Delivery Time

The actual delivery time depends on your location and the shipping method chosen during checkout:

  • Standard Shipping (US): Approximately 2–5 business days within the contiguous United States.
  • Priority Shipping (US): 1–3 business days.
  • Canada: 7–14 business days, up to 30 days.
  • International (e.g., UK, Australia): 7–14 business days, up to 30 days for remote areas.

Delivery may vary due to customs, weather, or carrier delays, especially for APO/FPO addresses.

Tracking Information

As soon as your order ships, we’ll provide you with a tracking number. You can monitor your package’s progress online via our tracking portal or your order details on vintagesingerparts.com, Etsy, or eBay.

Contact Us

If you have any specific inquiries about your order or need further assistance, feel free to reach out to us via email at Contact Us during our business hours (9:00 AM to 5:00 PM Central Time). We’re here to ensure your sewing supplies reach you promptly! 🚚🧵

US Shipping

  • Free Shipping: Available on all US orders $45 and up, including APO/FPO addresses. Merchandise total must be over $45 after discounts, taxes, and shipping.
  • Flat Rate Shipping: $6.25 on orders under $45 
  • Priority Shipping: $11.75
  • Shipping Service: United States Postal Service (USPS) Ground Advantage, First-Class Mail, and Priority Mail, all with tracking.
  • Shipping Timeline: Orders are shipped within 1–2 business days of being placed and generally received within 7–10 business days. APO/FPO addresses may take longer.

Canadian Shipping

  • Shipping: Weight-based.
  • Shipping Service: USPS and UPS Ground Services.
  • Shipping Timeline: Orders are shipped within 1–2 business days and generally received within 14 business days but may take up to 30 days.
  • Custom Fees: May apply and are the buyer’s responsibility.

International Shipping (Rest of the World)

  • Shipping: Weight-based.
  • Shipping Service: United States Postal Service (USPS) First-Class Mail International and Priority Mail International.
  • Shipping Timeline: Orders are shipped within 1–2 business days and generally received within 14 business days but may take up to 30 days.
  • Custom Fees: May apply and are the buyer’s responsibility.

Facts

Unlike many Internet retailers, we stock nearly everything we sell. Most of our products are in stock and ready to ship when you place your order. Every year, we process several thousand orders. We take great care to ensure your package arrives on time, complete, and in good condition.

Description

Original Singer Complete Upper Tension Assembly for Model 301A

Choose Cap Color: Black Cap or Brown Cap (select from drop-down menu)

Genuine vintage Singer complete upper tension assembly in excellent condition. Includes all components needed for a complete replacement. Most commonly needed when the original assembly is missing or broken. The tension assembly controls thread resistance to create balanced, secure stitches by ensuring the upper and bobbin threads interlock correctly within the fabric layers.

Key Features:

  • Genuine original Singer complete assembly
  • Available with black cap or brown cap
  • Excellent vintage condition
  • Direct replacement for missing or broken assemblies
  • Designed for Singer Model 301A

What's Included:

Complete upper tension assembly with all components including tension discs, spring, cap (black or brown), check spring, and stud.

How It Works:

The assembly consists of a spring and curved metal tension discs. Thread passes between the discs, and the tension dial adjusts the spring pressure. Higher tension pushes discs closer together (more resistance), while lower tension allows discs to sit further apart (less resistance). When balanced correctly, threads lock in the center of fabric layers, creating identical stitching on both sides.

When You Need This Assembly:

Most commonly needed when the original tension assembly is missing or broken. Signs you may need a replacement:

  • Missing or broken tension assembly components
  • Inconsistent tension that can't be adjusted
  • Thread not seating properly between discs
  • Unbalanced stitches with loose loops or puckering

Tips for Best Results:

  • Choose black or brown cap option to match your machine
  • Most commonly needed when original is missing or broken
  • Always thread with presser foot up to open tension discs
  • Proper tension creates balanced stitches on both sides
  • Incorrect tension causes loose loops, puckering, or thread breakage

Compatible Singer Model:

301A (designed specifically for this slant needle model)

Genuine original Singer complete upper tension assembly in excellent vintage condition. Choose black or brown cap option.

Specifications

  • Brand
    Singer
  • Condition
    Pre-Owned

Payment & Security

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Original Singer Upper Tension Assembly Fits Models 301, 301A - Central Michigan Sewing Supplies

Original Singer Complete Upper Tension Assembly - Model 301A - Black or Brown Cap

$ 29.95

Original Singer Complete Upper Tension Assembly for Model 301A

Choose Cap Color: Black Cap or Brown Cap (select from drop-down menu)

Genuine vintage Singer complete upper tension assembly in excellent condition. Includes all components needed for a complete replacement. Most commonly needed when the original assembly is missing or broken. The tension assembly controls thread resistance to create balanced, secure stitches by ensuring the upper and bobbin threads interlock correctly within the fabric layers.

Key Features:

What's Included:

Complete upper tension assembly with all components including tension discs, spring, cap (black or brown), check spring, and stud.

How It Works:

The assembly consists of a spring and curved metal tension discs. Thread passes between the discs, and the tension dial adjusts the spring pressure. Higher tension pushes discs closer together (more resistance), while lower tension allows discs to sit further apart (less resistance). When balanced correctly, threads lock in the center of fabric layers, creating identical stitching on both sides.

When You Need This Assembly:

Most commonly needed when the original tension assembly is missing or broken. Signs you may need a replacement:

Tips for Best Results:

Compatible Singer Model:

301A (designed specifically for this slant needle model)

Genuine original Singer complete upper tension assembly in excellent vintage condition. Choose black or brown cap option.

Color

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