What different types of threaded sleeves are there?

Threaded sleeves, also known as thread inserts, are fasteners used in various construction and DIY projects. They allow the connection of screws, bolts, or other threaded fasteners. Threaded sleeves come in several designs that differ in shape, material, and application. The most common include:

• Cylindrical threaded sleeves: These are the most commonly used threaded sleeves. They have a cylindrical design and are often made of metal or plastic.
• Reducing threaded sleeves: These sleeves have different thread sizes on each side. They are used to connect threads of different sizes, for example a large screw with a smaller bolt.
• Long threaded sleeves: These sleeves are longer than conventional threaded sleeves and are used to connect threads that are farther apart.
• Square threaded sleeves: Unlike cylindrical threaded sleeves, these have a square outer shape, which allows for easier installation.
• Materials: Threaded sleeves are available in various materials, including steel, stainless steel, brass, and plastic. The right material depends on the application and environmental conditions.