DIN 439 vs ISO 4035
Hexagon Thin Nut
8of 15 diameters identical7differ — the spanner size only
Interchangeable except for the width across flats (the spanner size) — 11 recorded dimensions differ. ISO 4035 replaced DIN 439 as the current document.
M10 Across flats17 → 16 mmM10 Across corners18.9 → 17.77 mmM22 weightISO 4035 +17.8%DIN 439 onlyM3, M4ISO 4035 onlyM7, M39
We produce to whichever standard your drawing calls out, DIN 439 included. ISO 4035 is the reference to specify on a new drawing.
What each number is
- DIN 439Superseded by ISO 4035
- Hex Thin Nut17 recorded sizes · M3 to M36
- ISO 4035Current
- Hexagon Thin NutEdition 2023 · 17 recorded sizes · M5 to M39
Check your size
At M5 every recorded dimension is identical.
| DIN 439 | ISO 4035 | |
|---|---|---|
| kgper 1000 pcs | 0.85 | 0.85 |
| RFQwe produce to the standard you name |
We produce to whichever standard your order names.
Where they differ
11 recorded values across 7 diameters. Every other diameter is listed identically in all of them.
| Size | Dimension | DIN 439 | ISO 4035 |
|---|---|---|---|
| M10 | s · Width Across Flats | 17 | 16 |
| M10 | e · Width Across Corners | 18.9 | 17.77 |
| M12 | s · Width Across Flats | 19 | 18 |
| M12 | e · Width Across Corners | 21.1 | 20.03 |
| M14 | s · Width Across Flats | 22 | 21 |
| M14 | e · Width Across Corners | 24.49 | 23.36 |
| M18 | e · Width Across Corners | 30.14 | 29.56 |
| M20 | e · Width Across Corners | 33.53 | 32.95 |
| M22 | s · Width Across Flats | 32 | 34 |
| M22 | e · Width Across Corners | 35.72 | 37.29 |
| M24 | e · Width Across Corners | 39.98 | 39.55 |
Identical in 8 diameters— show them
M5M6M8M16M27M30M33M36
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.
Dimensions by sizeM6M8M10M12M16M20M24M30M36
ContinueHexagon Thin Nut supplied sizesDIN 439 standard pageAll comparisons