DINReplaced → ISO 4017Draft · single source
DIN 933
Hexagon head screws, fully threaded
Replaced by
ISO 4017Current · Reviewed
Not identical: the width across flats differs for M10 (DIN 17 → ISO 16 mm), M12 (19 → 18 mm), M14 (22 → 21 mm) and M22 (32 → 34 mm); other sizes are unchanged. Other dimensions (e.g. head or nut height) can also differ.
The dimension table is published under the successor.
What changed · s
| Size | DIN 933 | ISO 4017 | Δ |
|---|---|---|---|
| M10 | 17 | 16 | −1 |
| M12 | 19 | 18 | −1 |
| M14 | 22 | 21 | −1 |
| M22 | 32 | 34 | +2 |
Source: Würth DIN→ISO changeover list · mm
Still valid from this record
- Head · drive
- Hexagon head · External hexagon (spanner)
- Thread
- Metric ISO coarse thread, full length · 6g
- Steel
- 5.6 · 5.8 · 8.8 · 10.9 · 12.9
- Stainless
- A2 · A4
- Other
- Brass · Plastic Pa
Cross-references
- ISO 4017
- replaced by
- CSN 021103
- national · CZ
- PN 82105
- national · PL
- UNI 5739
- national · IT
- EU 24017
- national
Why no table here
The source publishes one identical table for DIN 933, ISO 4017. It matches the official ISO 4017 preview, so it is published under ISO 4017 only (DIN→ISO change: 4 widths across flats, per Würth).
Status source: fasteners.eu, Otto Roth · Accessed 2026-09-23
All 18 standards of this type →