Steel Threaded Inserts

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Steel adaptors, also known as threaded inserts or threaded tube inserts, are designed to install into a hole in round, square, rectangular, or oval tubing, providing a female-threaded opening for a male stud. Made exclusively for use with mild carbon steel, our inventory features a range of threaded steel inserts to meet the requirements of various applications across industries.

Superior Components maintains the largest stocked selection of steel threaded tube inserts in the world, offering volume discounts for larger orders. For threaded adaptors to be used in injection-molded parts, consider our plastic threaded inserts. With many non-stock parts and custom solutions, contact Superior Components, and we will help you find the right threaded insert component for your application.

Features of Steel Threaded Tube Inserts

Female-to-male threaded steel inserts demonstrate stabilizing capabilities through their zinc-plated steel platform construction and heat-treated spring steel retaining clip, which are assembled at each end of a female-threaded steel nut. Superior Components stocks high-quality steel adaptors that offer benefits, including:

Easy to install using standard tools
Offers high strength and durability
Delivers vibration resistance

Steel Adaptors Available at Superior Components

We stock parts to fit in 5/8” to 4” OD tubes and from 10 to 20 gauge tubes. Female thread options for steel threaded inserts include:

1/4-20
5/16-18
3/8-16
1/2-13
M8

For our selection of female-to-male threaded steel inserts, we offer various retaining clip configurations to meet your needs. Heat-treated spring steel retaining clips are available in a horizontal style and round shape, designed to fit round and square tubing, as well as square, rectangular, and oval styles to fit tubes of the same shape. “Grater”-style clips are used in square tubing to align the clip vertically against the inside tube with protrusions, evoking a similar shape to a cheese grater while offering increased stability compared to horizontal clips.
To meet your specific application requirements, we also stock English and Metric thread sizes, left-handed threads, and adaptors with a male-threaded stud. If you cannot find the right component to meet your specific application requirements, explore our custom capabilities for made-to-order components, assemblies, and finished products tailored to your specifications.

Steel Threaded Inserts Applications and Uses

Across various industries, steel adaptors provide solutions for a range of projects. They can be used to connect tubes to other components or materials, as well as:

Installing adjustable glides for stability
Connecting casters for easier furniture movement
Reinforcing soft metal components
Repairing spark plugs
Reducing tapped hole sizes
Providing replacement solutions when furniture feet have worn out

Partner with Superior Components for High-Quality Parts at Competitive Prices

Since 1982, Superior Components has been a trusted partner, offering wholesale solutions for furniture components and industrial parts for various applications. By working with an international supplier network, we maintain an extensive inventory to provide you with a range of component and fastener solutions, ensuring you have the products you need when you need them. With turnarounds as fast as the following business day, we deliver high-quality components to meet your requirements in nearly any project, including competitive pricing for larger purchase orders. Contact us for more information on our threaded steel adapters or request a quote to start your order.