ISO 7380-1 vs ISO 7380-2
Hexagon socket button head screws with collar
Not the same part. ISO 7380-1 and ISO 7380-2 differ in 8 recorded dimensions across the shared sizes.
M3 Head diameter5.7 → 5.2 mmM16 weightISO 7380-1 +6.3%
These are separate products in one family, not alternates. Choose by the fit your drawing requires, then name that standard on the order.
What each number is
- ISO 7380-1Current
- Hexagon Socket Button Head ScrewEdition 2011 · 8 recorded sizes · M3 to M16
- ISO 7380-2Current
- Hexagon socket button head screws with collarEdition 2011 · 8 recorded sizes · M3 to M16
Check your size
At M3 the two standards do not match.
| ISO 7380-1 | ISO 7380-2 | |
|---|---|---|
| dkHead Diameter (mm) | 5.7 | 5.2 |
| kgper 1000 pcs at 30 mm | 1.81 | 1.76 |
| RFQwe produce to the standard you name |
Weight differenceISO 7380-1 is 2.5% heavier0.4 kg more steel at this quantity
We produce to whichever standard your order names.
Where they differ
8 recorded values across 8 diameters.
| Size | Dimension | ISO 7380-1 | ISO 7380-2 |
|---|---|---|---|
| M3 | dk · Head Diameter | 5.7 | 5.2 |
| M4 | dk · Head Diameter | 7.6 | 7.2 |
| M5 | dk · Head Diameter | 9.5 | 8.8 |
| M6 | dk · Head Diameter | 10.5 | 10 |
| M8 | dk · Head Diameter | 14 | 13.2 |
| M10 | dk · Head Diameter | 17.5 | 16.5 |
| M12 | dk · Head Diameter | 21 | 19.4 |
| M16 | dk · Head Diameter | 28 | 26 |
Differences on this page come from the TaurusFix confirmed dimension library, compared value by value and strictly against the standards themselves — not from a third-party equivalence chart.