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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Oversized washer M30 DIN 9021 | — | — | Oversized washer (body washer) | 33 | 92 | M30 | — | 140 HV, hot dip galv. | 6 | 0 | 0.27 |
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| Oversized washer M30 DIN 9021 | — | — | Oversized washer (body washer) | 33 | 92 | M30 | — | 140 HV | 6 | 0 | 0.27 |
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| Flat washer M4 Wide ASME B18.22M | — | — | Flat washer | 0 | 0 | M4 | — | F436 Type 1, zink plated | 0 | 0 | 0 |
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| Flat washer M4 Wide ASME B18.22M | — | — | Flat washer | 0 | 0 | M4 | — | F436 Type 1, hot dip galv. | 0 | 0 | 0 |
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| Flat washer M4 Wide ASME B18.22M | — | — | Flat washer | 0 | 0 | M4 | — | F436 Type 1 | 0 | 0 | 0 |
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| Flat washer M8 Narrow ASME B18.22M | — | — | Flat washer | 0 | 0 | M8 | — | F436 Type 1, zink plated | 0 | 0 | 0 |
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| Flat washer M8 Narrow ASME B18.22M | — | — | Flat washer | 0 | 0 | M8 | — | F436 Type 1, hot dip galv. | 0 | 0 | 0 |
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| Flat washer M8 Narrow ASME B18.22M | — | — | Flat washer | 0 | 0 | M8 | — | F436 Type 1 | 0 | 0 | 0 |
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| Stainless steel spring washer M4 DIN 7980 | — | — | Spring washer | 4.1 | 7 | M4 | — | X5CrNiMo17-12-2 / 1.4401 / 316 / A4 | 2.4 | 1.2 | 0 |
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| Stainless steel spring washer M4 DIN 7980 | — | — | Spring washer | 4.1 | 7 | M4 | — | X5CrNi18-10 / 1.4301 / 304 / A2 | 2.4 | 1.2 | 0 |
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