Definition
Socket head cap screws (SHCS) with a cylindrical head and hex socket drive are the workhorse metric fastener for machinery, fixtures, and precision assemblies.
Standards side-by-side
| Attribute | DIN 912 | ISO 4762 |
|---|---|---|
| Head style | Socket / cap head | Socket / cap head |
| Drive | Hex socket | Hex socket |
| Geometry basis | German industrial standard | International metric standard |
| Interchange | Commonly treated as equivalent for catalog buying | Preferred callout on new drawings |
For most US MRO and OEM buyers, DIN 912 and ISO 4762 describe the same product family. Confirm pitch, property class, and material on the PO.
Selection checklist
- Thread size (M2–M24)
- Length under head (mm)
- Material / property class (e.g. A2-70 / 304)
- Finish (plain / passivated)
- Documentation (MTC, RoHS, REACH)
FAQ
Q: Can I substitute ISO 4762 for DIN 912?
A: Usually yes for commercial grades when diameter, length, pitch, and property class match.
Q: Do you stock A2-70?
A: FASTENLAB catalogs 304 stainless SHCS to A2-70 (ISO 3506-1) for metric sizes.
Q: Where do I download CAD?
A: Open any SKU in the catalog and use the STEP download when available.