For wing screws (din 316 form), DIN 316 is the governing document for the dimensions listed below. Mechanical and performance requirements for this part family are set by its own standards, not by the bolt and screw property-class documents.
DIN 316 — Scope
The table below lists the dimensions catalogued for wing screws (din 316 form) under DIN 316. The scope of DIN 316 itself is not summarised here — where a figure matters, confirm it against the published document.
Tolerance & Product Grades
Product grade is a concept from dimensional fastener standards and does not apply to DIN 316. Tolerances for this part are the limits shown against each dimension in the table.
Dimensions Specified by DIN 316
| Thread size | Pitch (mm) | Wing span A (mm) | Wing height (mm) | Boss diameter (mm) | Common length range (mm) | Material | Reference standard |
|---|---|---|---|---|---|---|---|
| M4 | 0.7 | 22 | 10 | 9 | 8~30 | Steel zinc / A2 | DIN 316 |
| M5 | 0.8 | 27 | 12 | 11 | 10~40 | Steel zinc / A2 | DIN 316 |
| M6 | 1.0 | 32 | 14 | 13 | 10~50 | Steel zinc / A2 | DIN 316 |
| M8 | 1.25 | 40 | 17 | 17 | 12~60 | Steel zinc / A2 | DIN 316 |
| M10 | 1.5 | 48 | 21 | 20 | 16~60 | Steel zinc | DIN 316 |
Equivalent Standards
Where direct equivalents exist (ISO ↔ DIN, ISO ↔ ASME), they are listed on the parent Wing Screws (DIN 316 Form) page.
Always confirm against the dimensions on this page, since some "equivalent" standards differ in tolerances and head geometry.
When to Specify DIN 316
DIN 316 is still widely used in European mechanical engineering and as a cross-reference on legacy drawings; its ISO equivalent is preferred for new designs.
Custom manufacturing · Made to drawing
Need a screw to this standard in a non-standard size?
Parts built to DIN 316 are already in the catalog, so a special is usually a variation on existing tooling rather than a new design — which is what keeps the cost down. Made by cold heading or warm forging.
Minimum order from 2,000 pieces; samples within 7 days of drawing approval.
