Domed flange hexagon head self-drilling screw for roofing
Drill point and thread for fastening in one operation. Dimensions and tolerances refer to the stated execution; materials, finishes and drilling conditions are described separately.
Self-drilling screws
- Reference
- Ambrovit 89770
- Thread
- Self-drilling
- Drive
- External hexagon
- Units
- mm
Representative geometry photograph. Material and finish are specified separately.
Technical drawing and legend
Ambrovit reference execution 89770
Drawing not to scale.
- A
- Width across flats
- B
- Flange or wafer head diameter
- H+U
- Combined head and flange height
- d
- External thread diameter
- P
- Thread pitch
- R
- Indicative driving speed (rpm)
- T
- Drilling capacity for the specified execution
- l
- Required length, to be specified in the quotation
Dimensions
Dimensions in mm, except drive size. Min./Max. and approximate values (~) follow the Ambrovit catalogue for this execution and do not automatically apply to other versions.
| Nominal diameter | Limit | A | B | H+U | d | P |
|---|---|---|---|---|---|---|
| 6,3 | Min. | 9,78 | 14,20 | - | 6,10 | ~1,80 |
| 6,3 | Max | 10,00 | 15,00 | 6,70 | 6,25 | ~1,80 |
Materials and finishes
Executions documented by the named suppliers. Dueemme confirms material, coating and actual availability in the quotation. Not every combination applies to every diameter or geometry.
| Material | Finish / execution | Reference |
|---|---|---|
| C1022 steel | zinc plating with Cr3 passivation | Ambrovit 89770 |
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.
Drilling and application conditions
The R and T values below apply only to the Ambrovit C1022 steel execution. R is an indicative laboratory value: speed, substrate thickness and strength must be checked for the application. Where T depends on length, capacity is specified for the requested execution.
| Diameter | R (rpm) | T (mm) / condition |
|---|---|---|
| 6,3 | 2.250 | To be determined from the point and required length |
Declared hardness for Ambrovit 89770: surface HV ≥ 560; core HV 270-425.
Request a quotation
Specify type, diameter, required length, quantity, material and finish, plus the material and thickness to be drilled. Dueemme will confirm execution and availability.
Send your request