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A Quick Primer on Threaded Inserts for Plastic

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Jodie Marshall
A Quick Primer on Threaded Inserts for Plastic

There are many different types of threaded inserts available for plastic materials. Blind threaded inserts, Thick-wall threaded inserts, externally threaded inserts, and self-tapping threaded nut and bolt assemblies are all available. The following is a quick primer on threaded inserts for plastic. Become familiar with them, and you will be able to choose the right one for your application.

Blind Threaded Inserts

Blind Threaded Inserts are one type of fastener that can be installed through a single hole. They are a great alternative to tapped holes and weld nuts because they form a stronger bond. They are a great choice for applications where fastening is required frequently, such as in aerospace and defense. These inserts are also versatile, allowing them to be used with different materials and configurations. In addition, they offer low inventory requirements and are often more secure than other types of fasteners.

This fastener is best for use in applications involving thin metal, composite, or plastic materials. They feature internal and external threads and are therefore ideally suited to these materials. They also offer a cost-saving solution when compared to captive components. The leading domestic manufacturer of blind threaded inserts is AVK Industrial Products. They are available in a variety of shapes, ensuring the correct fit for each application.


Thick-wall Threaded Inserts

Threaded inserts are commonly used in applications requiring a strong joint, such as the attachment of molding or aircraft wing de-icers. They can also be used in boatbuilding, for example, to fasten circuit boards securely. They are also useful for repairing stripped holes. The following is a short description of these common materials and their uses. These threaded inserts are available in various sizes and materials.

Slotted body threaded inserts have cuts on the body that collapse and form a secure connection when the bolt is tightened. These threaded inserts are most often used in composite or thin materials. Those who need to convert their fasteners to metric threading can purchase Euro-style inserts. They come in semi-hexagonal, hexagonal, and round body styles.

Externally Threaded Inserts

Threaded inserts are commonly used in plastic, wood, and ceramic parts. These types of parts are manufactured from a wide range of materials including carbon steel, alloy steel, brass, plastics, and iron. These types of threaded inserts are rated 4.7 out of 5 stars based on the honesty of 386 consumer reviews. Listed below are some benefits of externally threaded inserts. These products are ideal for all types of applications.

When you install an externally threaded insert, you must make sure that the hole is clean and free from damaged threads. You can either use a nut and bolt or a spanner to drive in a captive nut. A solid externally threaded insert is threaded onto a tool and then inserted into the hole. The threads of an externally threaded insert should be located just below the surface of the hole.


Self-Tapping Threaded Inserts

Self-Tapping Threaded Inserts are specially designed metal bushings that cut their threads as they're driven into a drilled hole. They provide permanent threads in many materials, and their slots cut the threads when driving. Because they're self-cutting, they're a convenient option for quick repairs of stripped threads. These inserts are widely used for a variety of applications, including automotive and construction.

Designed to work in applications with low shear strength, self-tapping threaded inserts feature a tapered bottom end and three separate cutting bores. They cut their own threads when driven into a drilled hole, ensuring secure anchorage in the host material. Their thicker walls allow them to handle greater cutting force. The self-tapper also eliminates the need for pre-tapped holes.

Wellnut Inserts

The WELL-NUT(r) is a type of threaded neoprene bushing with a brass machine nut molded into one end. When a machine screw is tightened into the nut, the wellnut expands. Depending on the thread size, you can purchase various grip ranges for different applications. They're ideal for riveting and fastener needs.

Compared to conventional rivet nuts, Wellnuts are designed to be easily removed. They are available in different materials, including EPDM Neoprene and brass. The two materials combine to make a versatile fastener. The WellNut's removable, plastic design allows for blind fastenings, such as on windows, doors, and other surfaces. To install a Wellnut, you need to drill a hole in the installation material large enough to accommodate the diameter of the rubber portion.


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