A square nut in M8: this guide pulls the row from the standard, adds the assembly numbers an engineer actually uses, and links you straight to a quote.
M8 Dimensional Row (DIN 557)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e min (mm) | Nut height m (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|
| M8 | 1.25 | 13.0 | 18.0 | 6.5 | DIN 557 / DIN 562 | Square nut, general / channel use |
Spanner & Drive for M8 Square Nuts
Drive geometry for M8 Square Nuts is given by the row above; match the tool to the listed values.
Common Applications for M8 Square Nuts
M8 Square Nuts are commonly specified for general-purpose joints in machinery, fixturing and equipment frames.
Mating Parts for M8
Pair M8 with the matching M8 bolt or screw, plus a M8 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M8
When the joint preload approaches the proof load of M8 class 8.8, step up to M10 class 8.8 (or move to M8 class 10.9). When the joint is over-specified, M6 often saves weight and cost without losing the safety margin.