DIN 555 hexagonal nuts have a hexagonal shape and a metric coarse internal thread. The equivalent standard is ISO 4034. DIN 555 is a medium/high type nut with a thicker thickness than the ordinary DIN 934 nut and a higher load-bearing capacity.
DIN 555 Dimensions
| mm | P | e min | k max | k min | s max | s min |
|---|---|---|---|---|---|---|
| M5 | 0.8 | 8.63 | 4.6 | 3.4 | 8 | 7.64 |
| M6 | 1 | 10.89 | 5.6 | 4.4 | 10 | 9.64 |
| M8 | 1.25 | 14.2 | 7.25 | 5.75 | 13 | 12.57 |
| M10 | 1.5 | 18.72 | 8.75 | 7.25 | 17 | 16.57 |
| M12 | 1.75 | 20.88 | 10.75 | 9.25 | 19 | 18.48 |
| M16 | 2 | 26.17 | 13.9 | 12.1 | 24 | 23.16 |
| M20 | 2.5 | 32.95 | 16.9 | 15.1 | 30 | 29.16 |
| M22 | 2.5 | 35.03 | 18.9 | 17.1 | 32 | 31 |
| M24 | 3 | 39.55 | 20.05 | 17.95 | 36 | 35 |
| M27 | 3 | 45.2 | 23.05 | 20.95 | 41 | 40 |
| M30 | 3.5 | 50.85 | 25.05 | 22.95 | 46 | 45 |
| M33 | 3.5 | 55.37 | 27.05 | 24.95 | 50 | 49 |
| M36 | 4 | 60.79 | 30.05 | 27.95 | 55 | 53.8 |
| M39 | 4 | 66.44 | 32.25 | 29.75 | 60 | 58.8 |
| M42 | 4.5 | 71.3 | 35.25 | 32.75 | 65 | 63.1 |
| M45 | 4.5 | 76.95 | 37.25 | 34.75 | 70 | 68.1 |
| M48 | 5 | 82.6 | 39.25 | 36.75 | 75 | 73.1 |
| M52 | 5 | 88.25 | 43.25 | 40.75 | 80 | 78.1 |
| M56 | 5.5 | 93.56 | 46.25 | 43.75 | 85 | 82.8 |
| M60 | 5.5 | 99.23 | 49.25 | 46.75 | 90 | 87.8 |
| M64 | 6 | 104.86 | 52.5 | 49.5 | 95 | 92.8 |
| M72 | 6 | 116.16 | 59.5 | 56.5 | 105 | 102.8 |
| M80 | 6 | 127.46 | 65.5 | 62.5 | 115 | 112.8 |
| M90 | 6 | 144.08 | 73.5 | 70.5 | 130 | 127.5 |
| M100 | 6 | 161.02 | 81.5 | 78.5 | 145 | 142.5 |