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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Washer M39 EN ISO 7089 | — | A - without chamfer | Flat washer | 42 | 72 | M39 | — | 140 HV | 6 | 0 | 0.13 |
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| Belleville washer (Washer) A18 DIN 2093 | — | A - reinforced | Disc spring | 0 | 0 | A18 | — | 51CrV4 / 1.8159 | 0 | 1 | 0 |
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| Stainless steel spring washer M90 DIN 127 B | — | B - smooth edges | Spring washer (grover) | 92.5 | 121 | M90 | — | X5CrNiMo17-12-2 / 1.4401 / 316 / A4 | 18.9 | 8 | 0.29 |
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| Stainless steel spring washer M90 DIN 127 B | — | B - smooth edges | Spring washer (grover) | 92.5 | 121 | M90 | — | X5CrNi18-10 / 1.4301 / 304 / A2 | 18.9 | 8 | 0.29 |
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| Belleville washer (Washer) A50 DIN 2093 | — | A - reinforced | Disc spring | 0 | 0 | A50 | — | 51CrV4 / 1.8159 | 0 | 3 | 0.03 |
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| Toothed washer M3 DIN 6798 V | — | V - for countersunk screws | Toothed washer | 3.2 | 6 | M3 | — | FSt | 0 | 0.2 | 0 |
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| Stainless steel Belleville spring (washer) A40 DIN 2093 | — | A - reinforced | Disc spring | 0 | 0 | A40 | — | X10CrNi18-8 / 1.4310 | 0 | 2.25 | 0.02 |
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| Belleville washer (Washer) A180 DIN 2093 | — | A - reinforced | Disc spring | 0 | 0 | A180 | — | 51CrV4 / 1.8159 | 0 | 10 | 1.73 |
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| Stainless steel Belleville spring (washer) A63 DIN 2093 | — | A - reinforced | Disc spring | 0 | 0 | A63 | — | X10CrNi18-8 / 1.4310 | 0 | 3.5 | 0.06 |
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| Stainless steel Belleville spring (washer) B140 DIN 2093 | — | B - standard | Disc spring | 0 | 0 | B140 | — | X10CrNi18-8 / 1.4310 | 0 | 5 | 0.55 |
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