DIN 6334
DIN 6334 identifies the commercial product family. Nominal dimensions are provided for selection; agree tolerances and supply requirements. No ISO/UNI equivalence is declared.
DIN 6334
Hexagon coupling nut, height 3d
A hexagonal sleeve with a through internal thread for connecting two aligned threaded components. Its extended body accepts engagement from both ends; specify the material, property class and engagement depth for the joint.
- Dimensional range
- M6–M36
- Thread
- Metric · coarse pitch
- Configuration
- Hexagonal sleeve · m = 3d
Technical drawing and dimensional range
Commercial reference geometry M6–M36, height m = 3d. Submit your specification for different heights, other diameters or special threads.
Dimensions in mm. Identification drawing, not a manufacturing drawing.
| M | Pitch P | s | m |
|---|---|---|---|
| 6 | 1 | 10 | 18 |
| 8 | 1.25 | 13 | 24 |
| 10 | 1.5 | 17 | 30 |
| 12 | 1.75 | 19 | 36 |
| 14 | 2 | 22 | 42 |
| 16 | 2 | 24 | 48 |
| 18 | 2.5 | 27 | 54 |
| 20 | 2.5 | 30 | 60 |
| 22 | 2.5 | 32 | 66 |
| 24 | 3 | 36 | 72 |
| 27 | 3 | 41 | 81 |
| 30 | 3.5 | 46 | 90 |
| 33 | 3.5 | 50 | 99 |
| 36 | 4 | 55 | 108 |
The 3d height is not a load rating. Define effective engagement for each component so that neither occupies the length required by the other. Confirm property class, thread tolerance, alignment and finish before use.
Materials and property classes
| Material | Class / hardness | Configurable range | Supply |
|---|---|---|---|
| Steel to mechanical specification | 8 | M6–M36 | On request |
Other materials and specifications on request
Aluminium →Brass →Nylon →Duplex →Superduplex →ASTM — specification and grade →A2 / A4 stainless — specify property class →
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 | M6–M36 |
| Zinc plating — specify passivation | Steel to mechanical specification | 8 | M6–M36 |
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.
A coupling nut does not replace a certified structural assembly or a qualified lifting accessory. Strength and suitability depend on the complete configuration and effective thread engagement.
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.