DIN 571
Hex wood screws
Equivalent norms: UNI 704
Metric DIN 571 hex head lag screw bolts are heavy duty wood screws usually used to attach lumber to lumber or lumber to to masonry. Commonly used in deck and dock construction. Pre-drilling is recommended to prevent splitting. They are generally much larger in size than standard wood screws. BRK Industries offers the following sizes for immediate delivery from stock: Diameters ranging from M5 to M16 and up to 300mm long. View available parts by clicking on the
following link:
Hex wood screws
- DIN 571 Hex wood screws
- Material Grade: 4.8, 5.8
- Finish: BZP, HOT DIP GALV. & BLACK
- Thread: METRIC
Technical Specification for DIN 571 B Coach Screw/Wood Screw
| THREAD | 4 | 5 | 6 | -7 | 8 | 10 | 12 | 16 | 20 | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| ds | nominal size max. | 4 | 5 | 6 | 7 | 8 | 10 | 12 | 16 | 20 | |
| min. | 3.52 | 4.52 | 5.52 | 6.42 | 7.42 | 9.42 | 11.3 | 15.3 | 19.3 | ||
| da | max. | 5 | 6 | 7.2 | 8.2 | 10.2 | 12.2 | 15.2 | 19.2 | 24.4 | |
| k | nominal size | 2.8 | 3.5 | 4 | 5 | 5.5 | 7 | 8 | 10 | 13 | |
| max. | 3.1 | 3.88 | 4.38 | 5.38 | 5.88 | 7.45 | 8.45 | 10.45 | 13.9 | ||
| min. | 2.5 | 3.13 | 3.63 | 4.63 | 5.13 | 6.55 | 7.55 | 9.55 | 12.1 | ||
| s | nominal size | 7 | 8 | 10 | 12 | 13 | 17 | 19 | 24 | 30 | |
| max. | 7 | 8 | 10 | 12 | 13 | 17 | 19 | 24 | 30 | ||
| min. | 6.64 | 7.64 | 9.64 | 11.57 | 12.57 | 16.57 | 18.48 | 23.16 | 29.16 | ||
| e | min. | 7.5 | 8.63 | 10.89 | 13.07 | 14.2 | 18.72 | 20.88 | 26.17 | 32.95 | |
| l | weight kg/1000pcs | ||||||||||
| nominal size | min. | max. | |||||||||
| 16 | 15.1 | 16.9 | 1.71 | 292 | |||||||
| 20 | 18.95 | 21.05 | 2.01 | 3.42 | 5.02 | ||||||
| 25 | 23.95 | 26.05 | 2.41 | 4.02 | 5.82 | 11.5 | |||||
| 30 | 28.95 | 31.05 | 2.81 | 4.62 | 6.62 | 12.9 | 23.6 | ||||
| 35 | 33.75 | 36.25 | 3.11 | 5.12 | 7.42 | 14.2 | 25.8 | 36.2 | |||
| 40 | 38.75 | 41.25 | 3.51 | 5.82 | 8.22 | 15.6 | 28 | 39.2 | |||
| 45 | 43.75 | 46.25 | 8.94 | 16.9 | 30 | 42.1 | |||||
| 50 | 48.75 | 51.25 | 9.64 | 18.2 | 32.1 | 45.4 | 84.1 | ||||
| 55 | 53.5 | 56.5 | 10.5 | 19.6 | 34.3 | 48.6 | 89.7 | ||||
| 60 | 58.5 | 61.5 | 11.2 | 20.9 | 36.5 | 51.8 | 94.9 | 165 | |||
| 65 | 63.5 | 66.5 | 22.2 | 38.5 | 54.7 | 99.5 | 174 | ||||
| 70 | 68.5 | 71.5 | 23.6 | 40.7 | 57.8 | 107 | 182 | ||||
| 75 | 73.5 | 76.5 | 25 | 42.9 | 61 | 112 | 192 | ||||
| 80 | 78.5 | 81.5 | 26.5 | 45.2 | 64.5 | 118 | 201 | ||||
| 90 | 88.25 | 91.75 | 29.4 | 49.9 | 71 | 130 | 220 | ||||
| 100 | 98.25 | 101.75 | 32 | 54 | 77.1 | 141 | 238 | ||||
| 110 | 108.25 | 111.75 | 83.4 | 152 | 253 | ||||||
| 120 | 118.25 | 121.75 | 89.5 | 163 | 275 | ||||||
| 130 | 128 | 132 | 175 | 293 | |||||||
| 140 | 138 | 142 | 187 | 317 | |||||||
| 150 | 148 | 152 | 198 | 328 | |||||||
| 160 | 158 | 162 | 209 | 348 | |||||||
| 170 | 168 | 172 | 366 | ||||||||
| 180 | 178 | 182 | 385 | ||||||||
| 190 | 187.7 | 192.3 | 404 | ||||||||
| 200 | 197.7 | 202.3 | 421 | ||||||||
