Unhardened parallel pin, h8
Locating and connecting component. Geometry and tolerances are separate from materials and treatments; specify the required length in your quotation request.
ISO 2338 / ex UNI 1707
- References
- ISO 2338 / ex UNI 1707
- Tolerance / check
- h8
- Execution
- See drawing and technical notes
- Units
- mm

Representative geometry photograph. Material and finish are specified separately.
Technical drawing

- d
- Pin diameter, tolerance h8.
- c
- End chamfer.
- l / L
- Required length, to specify in the enquiry.
Reference drawing by Gandini. Dimensions in mm; not to scale. L identifies the length to specify in the quotation.
Reference geometry
Dimensions in mm. Supply lengths are not listed: specify the required length in your enquiry.
| d | Tolerance d | d min | d max | c ≈ |
|---|---|---|---|---|
| 0,8 | h8 | 0,786 | 0,800 | 0,16 |
| 1,0 | h8 | 0,986 | 1,000 | 0,20 |
| 1,5 | h8 | 1,486 | 1,500 | 0,30 |
| 2,0 | h8 | 1,986 | 2,000 | 0,35 |
| 2,5 | h8 | 2,486 | 2,500 | 0,40 |
| 3,0 | h8 | 2,986 | 3,000 | 0,50 |
| 4,0 | h8 | 3,982 | 4,000 | 0,63 |
| 5,0 | h8 | 4,982 | 5,000 | 0,80 |
| 6,0 | h8 | 5,982 | 6,000 | 1,20 |
| 8,0 | h8 | 7,978 | 8,000 | 1,60 |
| 10,0 | h8 | 9,978 | 10,000 | 2,00 |
| 12,0 | h8 | 11,973 | 12,000 | 2,50 |
| 14,0 | h8 | 13,973 | 14,000 | 2,50 |
| 16,0 | h8 | 15,973 | 16,000 | 3,00 |
| 20,0 | h8 | 19,967 | 20,000 | 3,50 |
| 25,0 | h8 | 24,967 | 25,000 | 4,00 |
| 30,0 | h8 | 29,967 | 30,000 | 5,00 |
The data identifies geometry, not availability. Diameter tolerance is distinct from length tolerance. A dash denotes an undocumented source dimension requiring verification on the supply drawing.
Materials, grades, finishes and treatments
| Material | Condition / requirements | Machining / finish |
|---|---|---|
| Free-cutting or carbon steel | Unhardened | Specify surface treatment |
| Stainless steel AISI 303 / AISI 304 | Unhardened | Specify surface treatment |
| Stainless steel AISI 316 / AISI 410, on request | Agree grade and condition | Specify surface treatment |
Materials and executions documented by the sources; specify them in your enquiry. Not all combinations are implied. Dueemme confirms grade, treatment, mechanical properties and availability in the quotation. A1/A2/A4 labels do not replace the metallurgical specification of the pin.
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.
Tolerances, standards and installation
Tolerance h8 applies to diameter d. End shapes may follow the variants in the drawing; these do not specify commercial lengths.
Related ISO/UNI references do not establish automatic equivalence: confirm the governing standard, edition and supply drawing.
Configure your enquiry
Select the diameter and enter the required length in the specifications, together with material, finish and quantity. Dueemme will confirm supply 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.
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