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Plastac S A
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Plastac S A
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Application filed by Plastac S AfiledCriticalPlastac S A
Priority to ES0221757UpriorityCriticalpatent/ES221757U/es
Publication of ES221757UpublicationCriticalpatent/ES221757U/es
Tornillo autoblocante, caracterizado esencialmente por el hecho de que la espiga roscada presenta, por lo menos, una zona recubierta de una capa dotada de cierta elasticidad, la cual no llega a cubrir el filo de la rosca y ocupa el fondo de los canales de la misma.