NF E25-536

Fasteners - Serrated washers with internal and external teeth - Flat shape - Symbol DD

Le présent document spécifie les dimensions et les caractéristiques des rondelles en acier à double denture (dents extérieures chevauchantes et dents intérieures chevauchantes) de forme plane. Il définit les essais à effectuer et la désignation.

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