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Self-forming screws, self-tapping screws, trilobular screws

Self-drilling screws are screws that are able to form a thread in unthreaded holes. They have the characteristic of plastically forming, that is, by deforming the material, the thread, thus creating a coupling without play between the screw and the nut: this guarantees an optimal fixing and a high resistance to unscrewing due to vibrations.

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Disc Springs: What Are They Used For? | Univiti

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