Wing screw, American form
Geometry, executions, materials and finishes in one data sheet. Required length and supply requirements are defined in the quotation request.
UNI 5449 - American form
- Dimensional reference
- UNI 5449
- Pitch
- Coarse
- Drive
- Wings
- Units
- mm

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

Reference drawing from the Berardi catalogue. Dimensions in mm; not to scale.
- d
- Nominal thread
- e
- Wing span
- h
- Head height
- d2
- Head base diameter
- g
- Wing thickness
- m
- Head base height
Reference geometry
Dimensions in mm. Supply lengths are not listed: specify the required length in your enquiry.
| d | e | h | d2 | g | m |
|---|---|---|---|---|---|
| M3 | 17.6 | 8.6 | 8 | 1.6 | 3.2 |
| M4 | 17.6 | 8.6 | 8 | 1.6 | 3.2 |
| M5 | 22.5 | 11 | 10.3 | 2.1 | 4.1 |
| M6 | 27.8 | 13.6 | 12.7 | 2.5 | 5.1 |
| M8 | 30.3 | 14.8 | 13.8 | 2.8 | 5.6 |
| M10 | 36.2 | 17.7 | 16.5 | 3.3 | 6.8 |
| M12 | 49.4 | 24.1 | 22.5 | 4.5 | 9 |
UNI 5449 dimensions from Berardi. The commercial description DIN 316 AF identifies the American form: check the drawing and do not confuse it with other DIN 316 wing screw forms.
Materials, grades, finishes and treatments
| Material | Class / execution | Finish |
|---|---|---|
| Steel | 4.8 | Clear zinc plated |
| Stainless steel A2 | To be specified | To be specified |
| Stainless steel A4 | To be specified | To be specified |
Material, class, tolerance and finish are confirmed in the quotation. Dimensional rows do not indicate availability by material; not all combinations are implied.
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, executions and application
The wings allow hand operation. Check head clearance, bearing geometry and permissible assembly torque. Inoxmare documents A2 and A4 for the American form; this does not establish every dimensional combination or other wing forms.
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.
Send your specification →