Phase 1 — reference & identification only. No shop, no accounts.

Square nuts

2 standards. ISO editions are listed first; each shows the DIN numbers it replaced, so a search for a DIN number lands on the right table.

DINTitleSizesDataStatus
DIN 557Square nutsM5 – M166 sizes · DraftCurrent
DIN 562Square thin nutsM2 – M108 sizes · DraftCurrent

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