Conical contact washer, narrow and medium series
Conical contact washer, narrow and medium series for assemblies and replacement parts. Compare the required geometry and specify material, finish and supply requirements in your enquiry.
Contact / NF E 25-511
- Type
- Conical contact washer, narrow and medium series
- Reference
- Contact / NF E 25-511
- Dimensions
- Dimensions in millimetres
- Configuration
- Material and finish to specification
Identification illustration, not to scale.
Technical drawing
- d1
- bore diameter
- d2
- outside diameter
- s
- material thickness
Identification drawing, not a manufacturing drawing. Refer to the agreed drawing for construction details, tolerances and free heights.
Variants and dimensions
Dimensions in mm. M identifies the screw nominal size.
| For screw | d1 | d2 | s |
|---|---|---|---|
| M3 | 3.1 | 6 | 0.5 |
| M3 | 3.1 | 8 | 0.6 |
| M4 | 4 | 8 | 0.8 |
| M4 | 4.1 | 8 | 0.8 |
| M4 | 4.1 | 10 | 0.9 |
| M5 | 5 | 10 | 1 |
| M5 | 5.1 | 10 | 1 |
| M5 | 5.1 | 12 | 1.1 |
| M6 | 6.1 | 12 | 1.2 |
| M6 | 6.1 | 14 | 1.3 |
| M8 | 8.2 | 16 | 1.4 |
| M8 | 8.2 | 18 | 1.4 |
| M10 | 10.2 | 20 | 1.6 |
| M10 | 10.2 | 22 | 1.6 |
| M12 | 12.4 | 24 | 1.8 |
| M12 | 12.4 | 27 | 1.8 |
| M14 | 14.4 | 30 | 2.4 |
| M16 | 16.4 | 32 | 2.8 |
| M20 | 20.5 | 40 | 3.2 |
Different geometries may exist for the same nominal size: specify the required dimensions. Tolerances and omitted details must be defined in the specification.
Materials, classes, finishes and treatments
| Material | Class / hardness | Finishes / treatments |
|---|---|---|
| C70 spring steel | To specify | Zinc plated |
| Stainless steel A2 | To specify | To specify |
| Spring steel | 43–50 HRC | To specify |
Material, hardness and treatment must be specified for the requested execution. A2 and A4 identify the stainless steel group and do not automatically imply 70/80 strength classes, hardness or passivation.
Dueemme confirms size, material and finish combinations and availability in its quotation.
Documentation
Download Dueemme data sheet ↓| Document | Status |
|---|---|
| Declaration of conformity | Subject to order agreement |
| Material certificate | Subject to order agreement |
| EN 10204 2.2 test report | Subject to order agreement |
| EN 10204 3.1 inspection certificate | Subject to order agreement |
| Dimensional inspection report | Subject to order agreement |
| Coating report | Subject to order agreement |
| Other documentation | Subject to order agreement |
Batch documents are not automatically included: specify your requirements in the RFQ.
Standards, types and application
Contact / NF E 25-511
Narrow and medium series share one product page; specify the required dimensions and reference. Different Contact executions are not automatically equivalent.
Suitability depends on bearing surfaces, preload and service conditions; washer geometry alone does not guarantee preload retention.
State the standard and edition or attach a drawing. Related DIN, ISO, UNI and NF references do not constitute a universal equivalence declaration for every execution.
Configure your enquiry
State your enquiry requirements. Dueemme will check size, material, finish and supply conditions in its quotation.
The size you need, including custom specifications
Other diameters, lengths, materials and finishes can be assessed on request. For dedicated production, we agree geometry, requirements and minimum quantities with the customer.
Send your specification →