ISO 8675:2023
Standard for style-0 thin nuts with metric fine threads. The pitch must match the mating male thread. Tabulated dimensional limits refer to the 2023 edition.
ISO 8675 · 2023
Fine-pitch hexagon thin nut
A thin profile for adjustment and jam-nut applications on metric fine threads. Always specify both diameter and pitch: M12 × 1.5 and M12 × 1.25 are not interchangeable. In jam-nut applications, use the thin nut together with a regular or high nut.
DIN 439 B · ISO 4035
The thin profile has reduced loadability. Class 04 is not class 4, 4.8 or 8: retain the leading zero. Jam-nut use requires an appropriate joint arrangement and a defined tightening procedure.
- Dimensional range
- M8–M39
- Thread
- Metric · fine pitch
- Configuration
- Style 0 · reduced loadability
- References
- DIN 439 B · ISO 4035
Technical drawing and dimensional range
ISO 8675:2023 dimensions from M8 to M39, covering 19 diameter/pitch pairs. Configurable supply combinations are listed separately. Other diameters and pitches on request.
Dimensions in mm. Identification drawing, not a manufacturing drawing.
| M | Pitch P | s | m min. | m max. |
|---|---|---|---|---|
| 8 | 1 | 13 | 3.7 | 4 |
| 10 | 1.25 | 16 | 4.7 | 5 |
| 10 | 1 | 16 | 4.7 | 5 |
| 12 | 1.5 | 18 | 5.7 | 6 |
| 12 | 1.25 | 18 | 5.7 | 6 |
| 14 | 1.5 | 21 | 6.42 | 7 |
| 16 | 1.5 | 24 | 7.42 | 8 |
| 18 | 2 | 27 | 8.42 | 9 |
| 18 | 1.5 | 27 | 8.42 | 9 |
| 20 | 2 | 30 | 9.1 | 10 |
| 20 | 1.5 | 30 | 9.1 | 10 |
| 22 | 2 | 34 | 9.9 | 11 |
| 22 | 1.5 | 34 | 9.9 | 11 |
| 24 | 2 | 36 | 10.9 | 12 |
| 27 | 2 | 41 | 12.4 | 13.5 |
| 30 | 2 | 46 | 13.9 | 15 |
| 33 | 2 | 50 | 15.4 | 16.5 |
| 36 | 3 | 55 | 16.9 | 18 |
| 39 | 3 | 60 | 18.2 | 19.5 |
The thin profile has reduced loadability. Class 04 is not class 4, 4.8 or 8: retain the leading zero. Jam-nut use requires an appropriate joint arrangement and a defined tightening procedure.
Materials and property classes
| Material | Class / hardness | Configurable range | Supply |
|---|---|---|---|
| Steel to mechanical specification | 04 | M8 × 1, M10 × 1, M12 × 1.5, M16 × 1.5, M20 × 1.5, M24 × 2 | On request |
Other materials and specifications on request
Aluminium →Brass →Nylon →Duplex →Superduplex →ASTM — specification and grade →A2 / A4 stainless — specify thin-nut property class →Steel property class 05 — to specification →
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 |
|---|---|---|---|
| Black oxide | Steel to mechanical specification | 04 | M8 × 1, M10 × 1, M12 × 1.5, M16 × 1.5, M20 × 1.5, M24 × 2 |
| Zinc plated, blue passivated | Steel to mechanical specification | 04 | M8 × 1, M10 × 1, M12 × 1.5, M16 × 1.5, M20 × 1.5, M24 × 2 |
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
DIN 439 B
Historical commercial reference also used for fine-pitch versions. DIN widths across flats may differ from ISO, particularly at M10, M12, M14 and M22: specify standard and pitch when ordering.
ISO 4035:2023
Separate coarse-pitch family. A matching nominal diameter does not make coarse and fine threads interchangeable.
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
The linked coarse-pitch references are family comparisons, not compatible threaded counterparts. Select the same diameter and fine pitch for the actual joint.
Do not automatically apply the bolt 8.8 / nut 8 pairing to this nut. Assess the connection using effective nut height and thread-stripping resistance.
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.