Helical Threaded Insert Kit E-Z Lok Stainless Steel #12-24 0.324″

Description

Product Overview

The E‑Z Lok SK20715 Helical Threaded Insert Kit is engineered for professionals who need a fast, dependable method to restore or reinforce threaded holes in soft metals. Constructed from 304 stainless steel, the coil inserts provide exceptional corrosion resistance and can tolerate temperatures up to 800 °F, making them suitable for a wide range of industrial and scientific environments. Each kit contains ten inserts sized for a #12‑24 thread, delivering an installed length of 0.324 inches per insert. The package also includes a precision‑ground drill bit, an STI‑type tap, a dedicated insertion tool, and tang‑break tools, ensuring that every step of the installation process can be completed with minimal equipment and without the need for welding or extensive machining. The design of the helical coil allows the insert to expand and lock securely within the tapped hole, creating a strong, durable thread that resists wear and tear even under cyclic loading. With a best‑seller rank of #61 in the Helical Threaded Inserts category, this kit has earned a reputation for reliability and ease of use among technicians, machinists, and maintenance engineers.

Usage

This kit is ideal for repairing damaged threads in aluminum, cast iron, magnesium, and other soft‑metal substrates commonly found in aerospace components, automotive parts, marine equipment, and laboratory apparatus. The installation process begins by drilling a pilot hole to the recommended diameter, followed by tapping the hole with the included STI tap to create the proper thread profile. The helical insert is then screwed into the tapped hole using the insertion tool; as it advances, the coil expands and grips the surrounding material, forming a new, robust thread. The tang‑break tool is used to remove the break‑off tang after the insert is fully seated, leaving a clean, flush surface ready for the final fastener. Because the inserts are made from stainless steel, they provide superior resistance to corrosion, making them suitable for applications exposed to moisture, chemicals, or high‑temperature environments. The kit’s versatility also extends to prototype development, where engineers can quickly modify or reinforce test fixtures without committing to costly re‑machining.

Why Choose Us

E‑Z Lok has a legacy of over three decades in fastener technology, and the SK20715 kit reflects that heritage of quality and innovation. Each component undergoes rigorous testing to meet ISO‑9001 standards, ensuring dimensional accuracy, material consistency, and long‑term performance. The stainless‑steel inserts are sourced from certified suppliers and undergo a passivation process that enhances their resistance to pitting and intergranular corrosion. Our comprehensive kit eliminates the need to source separate tools, reducing inventory costs and simplifying the repair workflow. In addition, E‑Z Lok provides responsive technical support and a 30‑day satisfaction guarantee, giving customers confidence that any installation questions or concerns will be addressed promptly. The combination of premium materials, precise engineering, and dedicated after‑sales service makes this kit a cost‑effective solution for both routine maintenance and critical repair tasks.

Key Features

• Stainless‑steel coil inserts resist corrosion and survive temperatures up to 800 °F, extending service life.
• Complete installation set includes drill, STI tap, insertion tool, and tang‑break tools for a one‑stop solution.
• Helical design expands to lock securely in soft metals, providing a strong, reusable thread without welding.
• Pack of ten inserts covers multiple repairs, reducing downtime and inventory overhead.
• Backed by E‑Z Lok technical support and a 30‑day guarantee for peace of mind.

FAQ

What metal types are compatible with this helical insert kit?

The inserts are specifically designed for soft metals such as aluminum, cast iron, magnesium, and certain alloys. They can also be used in softer grades of stainless steel where traditional tapping may cause material deformation.

How do I determine the correct drill size for the insert?

The recommended drill size is printed on the packaging and also listed in the included installation guide. Generally, the drill diameter is slightly smaller than the outer diameter of the coil to ensure the insert expands firmly when threaded into the hole.

Can the inserts be removed and reused after installation?

Yes, the helical inserts can be removed with a suitable extraction tool if the original thread needs to be re‑tapped. However, repeated removal and re‑installation may reduce the coil’s gripping ability, so reuse is recommended only when necessary.

What is the maximum thread length that can be achieved?

Each insert provides an installed length of 0.324 inches, which is sufficient for most standard fastener applications. For deeper threads, multiple inserts can be stacked, provided the combined length does not exceed the material’s thickness.

Is there a warranty or support available for this product?

E‑Z Lok offers a 30‑day satisfaction guarantee and a dedicated technical support line. If you encounter any issues during installation or have questions about material compatibility, our engineers are ready to assist.