Flat Washer (DIN 440)
Equivalent Standard: ISO 7094
Expanded washers for wooden structures DIN 440 / ISO 7094 / PN 82019 are an essential element in the construction of wooden structures. Made of high-quality A2 or A4 class steel, they provide solid support and stability. Available with an electroplated zinc [ZN] or hot-dip zinc [HDG] coating, they protect against corrosion and provide long-lasting protection. Perfect for use in wooden construction. Discover our wide range of washers in the Washers category and choose the best solution for your project.
- DIN 440
- Quality: 140 HV, 200 HV
- Coating: HOT DIP GALV., ZINC PLATED, DACROMET, GEOMET, BLACK
- Thread: METRIC
DIN 440
Technical Specification for DIN 440 Flat Washers
| Nominal Size | D1 | D2 | H | ||||
| For Thread | Nominal Min. | Max. | Nominal Max. | Min. | Nominal | Max. | Min. |
| M5 | 5,5 | 5,8 | 18 | 16,9 | 2 | 2,3 | 1,7 |
| M6 | 6,6 | 6,96 | 22 | 20,7 | 2 | 2,3 | 1,7 |
| M8 | 9 | 9,36 | 28 | 26,7 | 3 | 3,6 | 2,4 |
| M10 | 11 | 11,43 | 34 | 32,4 | 3 | 3,6 | 2,4 |
| M12 | 13,5 | 13,93 | 44 | 42,4 | 4 | 4,6 | 3,4 |
| M16 | 17,5 | 18,2 | 56 | 54,1 | 5 | 6 | 4 |
| M20 | 22 | 22,84 | 72 | 70,1 | 6 | 7 | 5 |
| M24 | 26 | 26,84 | 85 | 82,8 | 6 | 7 | 5 |
| M30 | 33 | 34 | 105 | 102,8 | 6 | 7 | 5 |
| M36 | 39 | 40 | 125 | 122,5 | 8 | 9,2 | 6,8 |
| Non-Preferred Dimensions | |||||||
| Nominal size | d1 | d2 | h | ||||
| For thread | nominal min. | max. | nominal max. | min. | nominal | max. | min. |
| M14 | 15,5 | 15,93 | 50 | 48,1 | 4 | 4,6 | 3,4 |
| M18 | 20 | 20,84 | 60 | 58,1 | 5 | 6 | 4 |
| M22 | 24 | 24,84 | 80 | 78,1 | 6 | 7 | 5 |
| M27 | 30 | 30,84 | 98 | 95,8 | 6 | 7 | 5 |
| M33 | 36 | 37 | 115 | 112,8 | 8 | 9,2 | 6,8 |