Self-Clinching Aluminum Nuts - Series CA
Captive Fastener Brand of Self clinching aluminum nuts provide an excellent solution for design engineers where a strong reusable thread is required in their aluminum assembly and weight considerations are a prime concern. Captive Fastener brand of self clinching aluminum nuts provide a low cost of installation solution, for providing strong threads in thin aluminum sheet metal. The clinch nuts are superior to tapping a thread in an extruded hole in thin aluminum sheet metal. The tapped threads made in the extruded hole do not have anywhere near the strength or durability of the threads in our self clinching nuts.
The design of the clinch nuts, provide a simple means of installation whereby the fastener is placed in the prescribed hole in the mating panel and when the fastener is pressed into the sheet it becomes an integral part of the chassis. This process eliminates loose hardware, which is especially important in electronic applications. The basic premise for the installation of our self clinching fasteners is that the clinch fastener has to be harder than the metal into which it is being installed. The fasteners also need to be installed into ductile materials. The maximum recommended hardness for our self clinching aluminum fasteners is spelled out in our catalog. For example if you are installing our part number CA632-1, which is a clinch nut made with 2024-T4 aluminum, into a .040" thick aluminum panel, the maximum recommended hardness of the parent metal is HRB 50.
Self-Clinching Aluminum Nuts
The way that the self clinching fasteners work, is that when the fastener is pressed into the mating sheet metal, the ductile panel material flows around the clinch profile and forms a strong permanent bond in the assembly. The self clinching fastener, which is harder than the metal into which it is installed, maintains its dimensional integrity and physical properties. When properly installed the fasteners have excellent torque out and push out values that meet or exceed industry standards. The performance values are readily available on our web site. This unique yet simple process is different than other fasteners that deform around the sheet metal when they are installed such as rivets. The clinch nuts also offer a green solution and it provides an alternative to welding which is problematic when using aluminum. The self clinching nuts also offer cosmetic advantages along with a weight advantage over many fasteners. The very light weight of the fasteners is very much in demand in electric vehicles.
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The aluminum clinch nuts are available in both inch and metric sizes and are both REACH and RoHS compliant. If 2D or 3D prints are required they can be downloaded from our product pages within the website.