M10 is one of the standard coarse-thread sizes for cap (acorn) nuts under DIN 1587. The sections below reproduce the dimensional row, list the matching tools and hole sizes, and summarize where this size is normally specified.
M10 Dimensional Row (DIN 1587)
| Size | Pitch (mm) | Width across flats s (mm) | Width across corners e min (mm) | Total height m (mm) | Dome diameter (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|---|
| M10 | 1.5 | 17.0 | 18.90 | 18.0 | 17.0 | DIN 1587 | Closed-end domed cap nut, decorative / protective |
Spanner & Drive for M10 Cap (Acorn) Nuts
Drive geometry for M10 Cap (Acorn) Nuts is given by the row above; match the tool to the listed values.
Common Applications for M10 Cap (Acorn) Nuts
M10 Cap (Acorn) Nuts are commonly specified for general-purpose joints in machinery, fixturing and equipment frames.
Mating Parts for M10
Pair M10 with the matching M10 bolt or screw, plus a M10 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M10
When the joint preload approaches the proof load of M10 class 8.8, step up to M12 class 8.8 (or move to M10 class 10.9). When the joint is over-specified, M8 often saves weight and cost without losing the safety margin.