DIN 1587:2021-11
DIN 1587:2021-11 is the current high-type standard. The table provides verified commercial dimensions for selection; specify internal construction, tolerances and product conformity in the order.
DIN 1587 · 2021-11
Hexagon domed cap nut, high type
The closed dome covers the screw end and reduces exposed thread. This high form has a hexagonal base: select thread size, spanner size and envelope around the actual screw projection.
- Dimensional range
- M4–M24
- Thread
- Metric · coarse pitch
- Configuration
- Closed cap nut · high type
Technical drawing and dimensional range
Commercial reference dimensions M4–M24. Across flats M10:16, M12:18 and M14:21 mm; older supplies may differ. Other sizes and materials on request.
Dimensions in mm. Identification drawing, not a manufacturing drawing.
| M | Pitch P | s | h max. | m max. |
|---|---|---|---|---|
| 4 | 0.7 | 7 | 8 | 3.2 |
| 5 | 0.8 | 8 | 10 | 4 |
| 6 | 1 | 10 | 12 | 5 |
| 8 | 1.25 | 13 | 15 | 6.5 |
| 10 | 1.5 | 16 | 18 | 8 |
| 12 | 1.75 | 18 | 22 | 10 |
| 14 | 2 | 21 | 25 | 11 |
| 16 | 2 | 24 | 28 | 13 |
| 20 | 2.5 | 30 | 34 | 16 |
| 24 | 3 | 36 | 42 | 19 |
External height h is not the usable blind-hole depth. Check screw projection, thread engagement and clearance before the closed end: a screw bottoming against the dome can prevent correct clamping.
Materials and property classes
| Material | Class / hardness | Configurable range | Supply |
|---|---|---|---|
| Steel to mechanical specification | 8 | M4–M24 | On request |
Other materials and specifications on request
Aluminium →Brass →Nylon →Duplex →Superduplex →ASTM — specification and grade →A2 / A4 stainless — specify class and finish →
For requirements beyond the tabulated combinations, enquire about aluminium, brass, nylon, duplex, superduplex or an ASTM specification. Alloy or grade, dimensions, mechanical requirements and finish are defined for the enquiry; the geometric reference does not automatically imply conformity with the product standard.
Enquire about another material or ASTM specification
Finishes and treatments
| Finish | Material | Class / hardness | M |
|---|---|---|---|
| Plain / as manufactured | Steel to mechanical specification | 8 | M4–M24 |
Select the finish for the material/property-class combination. Hydrogen relief and lubrication are separate process requirements, not certificates and not implied by the coating name.
ISO, DIN and UNI: key differences
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.
Mating components
Match nominal diameter, pitch, strength, material, finish and joint conditions.
The cap does not automatically seal or lock the joint. Sealing or locking requires a specified solution. Confirm nut property class and compatibility with the screw for the supplied product.
Application sectors
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 →Configure your enquiry
Selections follow the technical combinations in this data sheet. Quantities, delivery terms and documents will be agreed in the quotation.