TIME-SERT
0 ratings
Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit
genuine image
Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit
Recommended by leading automotive manufacturers.
Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit
Item #: 115742017

Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit

99% of respondents would recommend this to a friend

Item #: 115742017

XCD 698

Price Details

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

0 ratings Write a review
In stock
us Imported from USA store

QTY:

Order now and get it around Thursday, October 01
Secured transactionsecured transaction

Ubuy works hard to protect your security and privacy. Our advanced payment security system ensures confidentiality by encrypting your information during transmission using AES (Advanced Encryption Standards) and SSL (Secure Socket Layer) protocols. Your payment details are 100% secure as we do not share your payment details with third party sellers.

Our Top Logistics Partners
  • fedex
  • dhl
Recommended by leading automotive manufacturers.
U-Care Warranty:
None
Select a Plan
fast shipping

Fast
Shipping

free return

Free
Return*

secure packaging

Secure Packaging

100% original products

100% Original Products

pci-dss

PCI DSS Compliance

iso certified

ISO 27001 Certified

paypal payment
visa payment
mastercard payment
Note: Step Down Voltage Transformer required for using electronics products of US store (110-120). Recommended power converters Buy Now.

What Stands Out

Oversized Threads
Designed with oversized threads for a stronger grip, the Big-Sert 5121 enhances durability and reliability, making it perfect for heavy-duty applications and high-stress environments.
Comprehensive Kit
Includes all necessary tools and materials for easy installation, ensuring users can efficiently repair and restore damaged threads without requiring additional components or expertise.
Versatile Applications
Ideal for various materials like aluminum and metal, this repair kit addresses a wide range of repair needs, offering flexibility for both professional mechanics and DIY enthusiasts.

Product Details

Shop Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit online at a best price in Grenada. B003VYZ00C

Who Should Buy?

Suitable For
  • DIY Enthusiasts

    Perfect for home repair projects requiring durable thread restoration and enhanced fastening strength in metal and wood applications.

  • Automotive Technicians

    Ideal for mechanics needing to repair damaged threads in engine blocks, allowing for secure component installation and reliability.

  • Manufacturing Professionals

    Beneficial for industrial settings where strong, oversized thread repairs are crucial for machinery and equipment longevity.

Not Suitable For
  • Light Duty Users

    Not suited for casual users seeking quick fixes, as it is designed for more robust and long-lasting repairs.

Product Description

Big-Sert 5121 12-13 Oversized Inch Thread Repair Kit

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the Big-Sert 5121 1/2-13 Oversized Inch Thread Repair Kit used for?

    Answer: The Big-Sert 5121 is designed for repairing damaged threads in various materials, primarily metals. It is particularly useful for applications where traditional tap methods have failed due to stripped threads. The kit includes oversized inserts that create a robust and durable solution for multi-use applications, ensuring a secure hold under stress. It's commonly used in automotive repairs, machinery maintenance, and in any scenario where threaded connections are critical.
  • Question: How do I install the Big-Sert 5121 thread repair kit?

    Answer: Installation of the Big-Sert 5121 involves a few straightforward steps. First, drill out the damaged threads using the appropriate drill bit size recommended in the kit. Next, use the tap to create new threads. After that, insert the oversized Big-Sert into the newly tapped hole using a suitable insertion tool. This process ensures a tight fit, making it ideal for heavy-duty applications like engine parts, automotive components, or large machinery where thread integrity is paramount.
  • Question: What materials can the Big-Sert 5121 be used on?

    Answer: The Big-Sert 5121 is suitable for use on a variety of materials including aluminum, iron, and steel. Its design is intended to provide a strong hold in structural applications. Since it can withstand high torque and pressure, it is often used in automotive engines, equipment housings, and any mechanical structure requiring reliable threaded connections in these materials.
  • Question: How many inserts are included in the Big-Sert 5121 kit?

    Answer: The Big-Sert 5121 kit typically includes multiple inserts along with essential tools needed for the repair process. The number of inserts allows for multiple repairs, making it a cost-effective solution for extended use in various applications. With these additional inserts, users can effectively tackle multiple repair jobs, ensuring that they are well-equipped for diverse threading issues that may arise across different equipment or machinery.
  • Question: Can the Big-Sert 5121 be used for outdoor applications?

    Answer: Yes, the Big-Sert 5121 is designed to withstand environmental challenges, making it suitable for outdoor applications. Its corrosion-resistant properties make it an excellent choice for various outdoor equipment, machinery, and tools, providing a durable solution that holds up against moisture, dirt, and wear. Users may find it particularly beneficial for garden tools, outdoor machinery, or construction equipment that frequently encounter harsh conditions.
  • Question: Is the installation process of the Big-Sert 5121 complicated?

    Answer: The installation of the Big-Sert 5121 is straightforward and manageable for those with basic mechanical skills. The kit comes with specific instructions and tools designed for ease of use. Additional resources, like video tutorials, can guide users through the process step-by-step. It is suitable for both professionals and DIY enthusiasts looking to address threading issues in a variety of mechanical settings.
  • Question: What size drill bit is required for the Big-Sert 5121?

    Answer: The Big-Sert 5121 kit specifies a particular drill bit size necessary for creating an appropriate hole for the inserts. Generally, the required drill bit is slightly larger than the original damaged threads to accommodate the oversized nature of the repair kit. This ensures a snug fit for the insert, promoting a sturdy repair that can handle mechanical stress effectively.
  • Question: Can I use the Big-Sert 5121 for repairing threads in plastic materials?

    Answer: The Big-Sert 5121 is specifically designed for use in metal applications, such as aluminum or steel. While it's generally not recommended for plastic materials due to the different properties and behaviors of plastics when threaded, alternative solutions specifically meant for plastic thread repairs exist. Users should evaluate their materials and consider the right type of repair kit for their specific needs.
  • Question: How does the Big-Sert 5121 compare to other thread repair kits?

    Answer: The Big-Sert 5121 stands out from other thread repair kits due to its oversized inserts, which provide a superior level of strength and durability. Many competitors may offer standard-sized inserts that may not withstand high-stress situations as effectively. By utilizing Big-Sert, users can ensure long-lasting repairs that maintain performance in critical applications, making it a preferred choice for professionals.
  • Question: Where can I buy the Big-Sert 5121 1/2-13 Oversized Inch Thread Repair Kit?

    Answer: You can buy the Big-Sert 5121 1/2-13 Oversized Inch Thread Repair Kit on Ubuy. They provide a convenient platform for exploring multiple options for this thread repair kit, ensuring you have access to reliable products. Ubuy often updates its inventory to provide the latest versions and accessories, making it a trusted source for your repair needs.

TIME-SERT Inch Inserts & Kits Editorial Review

No editorial reviews found

Customer Reviews & Ratings

1 customers ratings
  • 5 Star
    100%
  • 4 Star
    0%
  • 3 Star
    0%
  • 2 Star
    0%
  • 1 Star
    0%

Review this product

Share your thoughts with other customers

Pros

  • Effective for repairing threads
  • Includes various sizes
  • Durable materials used
  • Easy to use
  • Comprehensive instructions

Cons

  • Some users found it less durable.

Platform Trust & Buyer Confidence

trustpilot logo
4.2/5 9477 reviews
Read reviews
JK
Jasmin
Verified buyer

“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
AG
Anke
Verified buyer

“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
H
Hazel
Verified buyer

“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
O
Opaleye
Verified buyer

“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
AC
Adele
Verified buyer

“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
Secure Checkout Global Delivery Easy Returns Genuine Products

Product Price History

Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

XCD 698

Order now and get it around Thursday, October 01

QTY:

Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Complete thread repair kit for 1/2-13 inch holes.
  • Includes essential tools: drill, counterbore, tap, and installation driver.
  • Contains five durable steel inserts for lasting repairs.
  • Perfect for automotive applications and beyond.
  • Designed and manufactured in the United States.
  • Trusted quality guaranteed by industry leaders.

Ubuy Assurance

Experience worry-free shopping with 100% original products, PCI DSS-compliant payment security, ISO 27001-certified data protection, the fastest cross-border delivery, free returns *, and secure packaging on every order.