Fasteners & Hardware
DIN 440 Flat/Large Washer
DIN 440 is a flat/large washer with an extended contact area for timber structures. FLOK supplies round and square variants to GOST and ISO standards.
DIN 440 washers are fasteners with an enlarged flat or round hole and an extended outer diameter. Made of steel, also available in stainless versions. Comply with GOST and ISO standards.
Purpose of DIN 440 washers
The increased contact area distributes the load over the surface and is suitable for timber structures. Besides the round shape, square washers with a bolt hole are also available. The material is corrosion-resistant, ensuring the durability of the connection.
DIN 440 washer dimensions
| d | d1 | d2 | s |
|---|---|---|---|
| M5 | 5.5 | 18.0 | 2.0 |
| M6 | 6.6 | 22.0 | 2.0 |
| M8 | 9.0 | 28.0 | 3.0 |
| M10 | 11.0 | 34.0 | 3.0 |
| M12 | 13.5 | 44.0 | 4.0 |
| M16 | 17.5 | 56.0 | 5.0 |
| M20 | 22.0 | 72.0 | 6.0 |
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