Washers
Washers are flat fastening elements in the shape of a disk or ring, installed between the bearing surface of a nut and the surface of the connected part. Their main purpose is to evenly distribute the clamping load created by the fastening element, prevent mechanical damage to the surfaces of the connected components, and reduce the likelihood of unintentional loosening of the threaded connection due to vibrations or other factors.
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| Name | Compound | Execution | Fastener type | Inner diameter, d1 (mm) | Outer diameter, d2 (mm) | Size | Standard | Steel grade | Washer height, h (mm) | Washer thickness, s (mm) | Weight 1 pc (kg) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Flat washer M4 DIN 7349 | — | — | Flat washer | 4.3 | 12 | M4 | — | 200 HV, hot dip galv. | 0 | 1.6 | 0 |
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| Flat washer M4 DIN 7349 | — | — | Flat washer | 4.3 | 12 | M4 | — | 200 HV | 0 | 1.6 | 0 |
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| Flat washer M4 DIN 7349 | — | — | Flat washer | 4.3 | 12 | M4 | — | 100 HV, zinc flake | 0 | 1.6 | 0 |
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| Flat washer M4 DIN 7349 | — | — | Flat washer | 4.3 | 12 | M4 | — | 100 HV, hot dip galv. | 0 | 1.6 | 0 |
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| Flat washer M4 DIN 7349 | — | — | Flat washer | 4.3 | 12 | M4 | — | 100 HV | 0 | 1.6 | 0 |
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| Stainless steel toothed washer M2 DIN 6798 J | — | J - internal teeth | Toothed washer | 2.2 | 4.5 | M2 | — | X5CrNiMo17-12-2 / 1.4401 / 316 / A4 | 0.9 | 0.3 | 0 |
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| Belleville washer (Washer) B12,5 DIN 2093 | — | B - standard | Disc spring | 0 | 0 | B12,5 | — | 51CrV4 / 1.8159 | 0 | 0.5 | 0 |
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| Washer M20 DIN 125 A | — | A - without chamfer | Flat washer | 21 | 37 | M20 | — | 42CrMo4 / 1.7225 | 3 | 0 | 0.02 |
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| Washer M20 DIN 125 A | — | A - without chamfer | Flat washer | 21 | 37 | M20 | — | C45E / 1.1191 | 3 | 0 | 0.02 |
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| Washer M20 DIN 125 A | — | A - without chamfer | Flat washer | 21 | 37 | M20 | — | 300 HV, zinc flake | 3 | 0 | 0.02 |
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