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How to Choose the Right Threaded Insert for the Job
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Whenever you are working with fasteners, you want to be sure you have a strong, durable rivet or bolt that is suited to the job. Blind threaded inserts are among the most versatile types of fasteners, and there are thousands of types from which to choose. Choosing the right threaded insert depends on the nature of the materials you are working with and the application.
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What’s a <a href="http://www.hardwaco.com/threaded-inserts/" target="_self">Threaded Insert</a>?
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A threaded insert is a sleeve with a threaded interior that can accept a bolt or threaded fastener. The insert can have different dimensions, be made of different materials, and come in different configurations or tooling; its design will hold fast in thin or soft materials, making the threaded fastener secure.
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If you have devices that need to be disassembled and reassembled or that use particularly soft materials, threaded inserts offer a number of advantages, especially if the connection is load-bearing. Flexible plastics, for example, have difficulty holding a threaded bolt because the threads in the tap hole aren’t durable enough. Rather than relying on threads drilled into the soft workpiece itself, a threaded insert gives you more strength and more versatility and tends to be more resilient over time.
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Designed with Automation in Mind
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Blind threaded inserts can be installed from one side, enabling faster installation, especially in a production line. They offer a stronger alternative to weld nuts and tapped holes, and they provide a stronger bond than self-tapping screws. In fact, threaded inserts are usually the strongest and least time-consuming fasteners used in any manufacturing setting, especially because they were designed for automation.
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Threaded inserts have ribbed walls that offer greater strength under load. They can be used at virtually any stage of production, including after a workpiece is painted or coated, because they don’t require reworking once they are installed. That’s why blind threaded inserts have become so popular in applications such as aerospace, defense, transportation, clean energy, medical applications, and electronics.
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There are a variety of different types of threaded inserts, each with a different design for a specific application.
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Rivet nut inserts, sometimes referred to as blind rivet nuts, can be installed from one side of a joint and have a counter-threaded interior designed to accept a bolt. Some rivet nuts will bulb on the blind side to create a solid connection. Others are designed to pull the rivet nut into the sleeve as they are tightened.<br/>Rivet nuts were first used to connect thick-walled materials in the 1930s, when RIVNUT® fasteners came into extensive use in aerospace manufacturing. When securing metal, thick-wall threaded inserts are often used. These are the most common types of inserts and come with both ribbed and knurled bodies, as well as smooth bodies in round, hexagonal, semi-hexagonal, and other shapes. They are made of different materials and come in different shapes, including large and small flanged heads, open and closed-end, and other designs.<br/>Thin-walled inserts came later in round, hexagonal, and square designs. These inserts offer added versatility, such as using sealant under the head or special plating for greater durability in harsh conditions.<br/>They also come in a knurled body design for a better grip on the material. For thicker fiberglass materials, such as those used in boatbuilding, knurled inserts are often used to minimize corrosion.<br/>
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Eurostyle inserts are round-body threaded inserts with semi-hexagonal, fully hexagonal, heavy hexagonal, or square body designs. They are available from a variety of manufacturers, including Avdel, Atlas, and Sherex Fastening Solutions.<br/>
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