When you need Square Nuts in the M6 size, the controlling values come from DIN 557. This page lists them in one place — pitch, head geometry, tool size and the matching hole.
M6 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 |
|---|---|---|---|---|---|---|
| M6 | 1.0 | 10.0 | 13.9 | 5.0 | DIN 557 / DIN 562 | Square nut, general / channel use |
Spanner & Drive for M6 Square Nuts
Drive geometry for M6 Square Nuts is given by the row above; match the tool to the listed values.
Common Applications for M6 Square Nuts
M6 Square Nuts are commonly specified for general-purpose joints in machinery, fixturing and equipment frames.
Mating Parts for M6
Pair M6 with the matching M6 bolt or screw, plus a M6 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M6
When the joint preload approaches the proof load of M6 class 8.8, step up to M8 class 8.8 (or move to M6 class 10.9). When the joint is over-specified, M5 often saves weight and cost without losing the safety margin.