KBc番号/055ナットの締結力で座金が変形し、ボルトが緩んだ
KBc番号:055
発生日時:
名称:ナットの締結力で座金が変形し、ボルトが緩んだ
破壊モード:緩み
KBc番号:055
発生日時:
名称:ナットの締結力で座金が変形し、ボルトが緩んだ
破壊モード:緩み
website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website website