NF E25-415

Hexagon nuts with conical spring washer. Product grade A.

La présente norme fixe les dimensions, caractéristiques, contrôles et essais s'appliquant aux écrous hexagonaux à rondelle conique lisse incorporée. Elle fait partie d'un ensemble de cinq normes de vis à métaux et écrous à rondelle incorporée. Il s'agit de produits peu fréquemment tenus en stock.

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