M12 is one of the standard coarse-thread sizes for wing nuts under DIN 315. The sections below reproduce the dimensional row, list the matching tools and hole sizes, and summarize where this size is normally specified.
M12 Dimensional Row (DIN 315)
| Size | Pitch (mm) | Wing span (mm) | Wing height (mm) | Body height (mm) | Reference standard | Notes |
|---|---|---|---|---|---|---|
| M12 | 1.75 | 64 | 38 | 22 | DIN 315 | Hand-tightened wing nut |
Spanner & Drive for M12 Wing Nuts
Drive geometry for M12 Wing Nuts is given by the row above; match the tool to the listed values.
Common Applications for M12 Wing Nuts
M12 Wing Nuts are commonly specified for medium-duty structural joints and motor / chassis mounting.
Mating Parts for M12
Pair M12 with the matching M12 bolt or screw, plus a M12 flat washer where required to distribute load on softer materials.
When to Step Up or Down from M12
When the joint preload approaches the proof load of M12 class 8.8, step up to M16 class 8.8 (or move to M12 class 10.9). When the joint is over-specified, M10 often saves weight and cost without losing the safety margin.