Thread
The interior of the insert is threaded to accommodate bolts or screws.
The exterior can be smooth, knurled, threaded, or feature fins or barbs to enhance grip in the host material.
Some threaded inserts include a flange to provide a larger bearing surface and prevent the insert from being driven too deep into the material.
Materials
Steel: Commonly used for its strength and durability.
Stainless Steel: Offers excellent corrosion resistance, suitable for harsh environments.
Brass: Provides good corrosion resistance and electrical conductivity, often used in electrical and electronic applications.
Aluminum: Lightweight and corrosion-resistant, ideal for applications where weight is a concern.
Types
Helical Inserts (Helicoils): Coiled wire inserts that expand upon installation to lock into place.
Rivet Nuts: Similar to rivet bushes, designed for blind installations.
Press-In Inserts: Designed to be pressed into pre-drilled holes, typically in softer materials.
Threaded Inserts for Wood: Often feature external threads or barbs to grip wood securely.
Molded-In Inserts: Placed into molds before casting or injection molding, becoming integrated into the final product.
Applications
Automotive: Used in engine blocks, interior components, and other parts where strong, durable threads are needed.
Aerospace: Provides reliable threaded connections in lightweight composite materials.
Electronics: Common in enclosures, circuit boards, and other components requiring secure fastening.
Furniture: Used to provide strong joints in flat-pack and assembled furniture.
Plastics: Reinforces threads in plastic components to prevent stripping and wear.
