DINReplaced → ISO 4034Draft · single source
DIN 555
Hexagon nuts, product grade C
- Head · drive
- External hexagon (spanner)
- Thread
- Metric ISO coarse thread
- Tolerance
- 7H
- Property classes
- 05
- Materials
- Steel
Replaced by
ISO 4034Current · Draft
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.
What changed · s
| Size | DIN 555 | ISO 4034 | Δ |
|---|---|---|---|
| M10 | 17 | 16 | −1 |
| M12 | 19 | 18 | −1 |
| M14 | 22 | 21 | −1 |
| M22 | 32 | 34 | +2 |
Source: Würth DIN→ISO changeover list · mm
Dimensions
mm · values as the standard states them| Size | P | s | e | m | dw | m´ |
|---|---|---|---|---|---|---|
| M5 | 0.8 | 8 7.64 – 8 | ≥ 8.63 | 4 3.4 – 4.6 | ≥ 6.7 | — |
| M6 | 1 | 10 9.64 – 10 | ≥ 10.89 | 5 4.4 – 5.6 | ≥ 8.7 | — |
| M8 | 1.25 | 13 12.57 – 13 | ≥ 14.2 | 6.5 5.75 – 7.25 | ≥ 11.5 | — |
| M10 | 1.5 | 17 16.57 – 17 | ≥ 18.72 | 8 7.25 – 8.75 | ≥ 15.5 | — |
| M12 | 1.75 | 19 18.48 – 19 | ≥ 20.88 | 10 9.25 – 10.75 | ≥ 17.2 | — |
| M16 | 2 | 24 23.16 – 24 | ≥ 26.17 | 13 12.1 – 13.9 | ≥ 22 | — |
| M20 | 2.5 | 30 29.16 – 30 | ≥ 32.95 | 16 15.1 – 16.9 | ≥ 22.7 | — |
| (M22) | 2.5 | 32 31 – 32 | ≥ 35.03 | 18 17.1 – 18.9 | ≥ 29.5 | — |
| M24 | 3 | 36 35 – 36 | ≥ 39.55 | 19 17.95 – 20.05 | ≥ 33.2 | — |
| (M27) | 3 | 41 40 – 41 | ≥ 45.2 | 22 20.95 – 23.05 | ≥ 38 | — |
| M30 | 3.5 | 46 45 – 46 | ≥ 50.85 | 24 22.95 – 25.05 | ≥ 42.7 | — |
| (M33) | 3.5 | 50 49 – 50 | ≥ 55.37 | 26 24.95 – 27.05 | ≥ 46.5 | — |
| M36 | 4 | 60 58.8 – 60 | ≥ 60.79 | 29 27.95 – 30.05 | ≥ 51.1 | — |
| (M39) | 4 | 60 58.8 – 60 | ≥ 66.44 | 31 29.75 – 32.25 | ≥ 55.9 | ≥ 23.8 |
| M42 | 4.5 | 65 63.1 – 65 | ≥ 71.3 | 34 32.75 – 35.25 | ≥ 59.9 | ≥ 26.2 |
| (M45) | 4.5 | 70 68.1 – 70 | ≥ 76.95 | 36 34.75 – 37.25 | ≥ 64.7 | ≥ 27.8 |
| M48 | 5 | 75 73.1 – 75 | ≥ 82.6 | 38 36.75 – 39.25 | ≥ 69.4 | ≥ 29.4 |
| (M52) | 5 | 80 78.1 – 80 | ≥ 88.25 | 42 40.75 – 43.25 | ≥ 74.2 | ≥ 32.6 |
| M56 | 5.5 | 85 82.8 – 85 | ≥ 93.56 | 45 43.75 – 46.25 | ≥ 78.7 | ≥ 35 |
| (M60) | 5.5 | 90 87.8 – 90 | ≥ 99.23 | 48 46.75 – 49.25 | ≥ 83.4 | ≥ 37.4 |
| M64 | 6 | 95 82.8 – 95 | ≥ 104.86 | 51 49.5 – 52.5 | ≥ 88.2 | ≥ 39.6 |
| M72x6 | 6 | 105 102.8 – 105 | ≥ 116.16 | 58 56.5 – 59.5 | ≥ 97.7 | ≥ 45.2 |
| M80x6 | 6 | 115 112.8 – 115 | ≥ 127.46 | 64 62.5 – 65.5 | ≥ 107.2 | ≥ 50 |
| M90x6 | 6 | 130 127.5 – 130 | ≥ 144.08 | 72 70.5 – 73.5 | ≥ 121.1 | ≥ 56.4 |
| M100x6 | 6 | 145 142.5 – 145 | ≥ 161.02 | 80 78.5 – 81.5 | ≥ 135.4 | ≥ 62.8 |
Ranges read min – max; ≤ / ≥ where the standard gives one limit, ≈ for approximate values. Sizes in (brackets) are non-preferred. Select a row for its size sheet.