NF E25-035-1

Bolted joints - Part 1 : stainless steel fasteners - Test methods for torque/clamp force and tightening ability

Le présent document définit la méthode d'essai couple/tension de référence afin de vérifier que les fixations à filetage métrique ISO en acier inoxydable ont fait l'objet d'une finition lubrifiante (afin d'éviter les risques de grippage) les rendant aptes à être serrées, afin de réaliser un assemblage vissé dans des conditions satisfaisantes et reproductibles. Il permet également de vérifier la condition de non-grippage sur assemblage réel. Il donne en outre les principales règles de l'art pour les assemblages vis-écrous en acier inoxydable. Le présent document fait partie d'une série de deux normes dont la partie 2 traite spécifiquement des écrous autofreinés. La version précédente de la norme a été annulée en 2005 (voir avant-propos) .

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