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News

PEM SFN Spinning Flare Nuts Eliminate Loose Fasteners In Thin Metal Sheet Attachment Applications

By Leslie Langnau | August 14, 2018

PEM SFN spinning flare nuts from PennEngineering become permanently captivated upon installation in thin metal sheets and, when paired with a self-clinching stud or other fixed externally threaded hardware, can eliminate all loose fasteners (including flange nuts) in attachment applications. These one-piece, flanged hex nuts additionally will spin freely in a sheet enabling quick attachment to mating hardware. Their use ultimately promotes savings in assembly time and costs.

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PEM SFN steel spinning flare nuts install in steel, stainless steel, or aluminum sheets of any hardness and as thin as 1mm. They are available in metric thread sizes M5, M6, and 8.

Permanent installation is accomplished by inserting the nut into a properly sized, pre-punched, and embossed mounting hole in a metal sheet and then applying sufficient squeezing force to flare the fastener’s shank. When installed, the part will appear identical to a standard flanged hex nut above the sheet and will remain flush on the other side.

Detailed specifications, fastener drawings and 3D models, and performance data (Bulletin SFN) for these RoHS-compliant fasteners can be viewed and downloaded for free at www.pemnet.com.

Founded in 1942, PennEngineering (Danboro, PA, USA) is a global leader in the fastening industry with technical and manufacturing facilities in North America, Europe, and Asia supported by a global engineering-focused sales force and a worldwide network of authorized distributors.