Whether you want to build machines, furniture, or shelving, Threaded Inserts can conveniently join materials. Threaded inserts make it easier to disassemble and repair a project if necessary. However, not all threaded inserts are created equal, and picking the right type can make a huge difference in your construction’s stability, reliability and longevity. In this comprehensive selection guide, we’ll help you understand the different types of threaded inserts, the materials they are made of, and when to use each type.
A Comprehensive Selection Guide on How to Select the Right Threaded Insert
Key Considerations for Threaded Inserts
When selecting a threaded insert, there are several factors to consider, such as load capacity, material, thread type, and size:
- Load capacity refers to the amount of weight the joint can bear.
- Material plays a critical role in the durability of the insert.
- The thread type, whether internal or external, affects compatibility with screws, bolts or studs.
- Size should be determined by the hole’s size and the material’s depth to which the insert must fit.
Different Types of Threaded Inserts
Threaded inserts are broadly categorized based on their shapes and materials. The most common shapes are helical- or key-lock inserts. Helical inserts are designed to be screwed into holes that match their thread size. They are known for their flexibility and ease of installation. On the other hand, key-lock inserts feature a locking mechanism that keeps them in place once they are driven into a pre-drilled hole. The choice of insert material is significant. Brass or aluminum inserts are suitable for projects requiring lightweight joints. Stainless steel inserts are particularly helpful for outdoor applications since they resist weather and rust.
Specific Situations Where Threaded Inserts are Required
Threaded inserts are typically used when there is a need to join parts unsuited for direct threading. Wooden structures with dense grains can be complicated to screw in without using an insert. When dealing with materials such as plastics, low-density fiberboards or sandwiched wood, the chances of stripping or cross-threading screws are higher, and inserts can simplify the process. In metal projects, threaded inserts can act as joint reinforcements or threads where none currently exist.
Threaded Inserts for Different Weight Capacities
The weight-holding capacity of the inserts you use is critical to the lifespan of the joint. Class one inserts can hold weights of about half their size. Class two can hold more than half but less than the surrounding material. Class three inserts correspond to the weight capacity of the surrounding material and can hold significantly more than class one and two inserts. Think carefully before selecting a class, and consider the materials surrounding the insert.
Construction Techniques Using Threaded Inserts
Threaded inserts have several construction techniques, from the press-in insert to the ultrasonic insertion method. The most common press-in technique requires a hammer and two-piece tooling. The hand-held tool holds the insert flush to the material’s surface while a hammer drives the insert into the hole until it’s level with the surrounding material. The ultrasonic insertion method involves the vibration of inserts’ thread into a piece of pre-drilled material using a screw spindle.
Conclusion:
In conclusion, selecting threaded inserts can be manageable when you understand the key factors that guide the selection process. Considering load capacity, insert materials, thread type and size are the primary considerations; we recommend choosing a threaded insert based on the application. When you need help determining the threaded insert type, seek expert guidance. By investing time and effort in picking the right threaded insert, you’ll save yourself money and time in the long run, extending the longevity and reliability of your structures.
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