Din557 square stainless steel nut
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![](https://icdn.tradew.com/file/201903/1573441/jpg/7091656.jpg?x-oss-process=image/quality,Q_90)
Applied discipline: mechanical engineering (first-level discipline);Mechanical parts (second-level discipline);Fasteners (subject ii)
![](https://icdn.tradew.com/file/201903/1573441/jpg/7053158.jpg?x-oss-process=image/quality,Q_90)
Applied discipline: mechanical engineering (first-level discipline);Mechanical parts (second-level discipline);Fasteners (subject ii)