Pan head TX self-drilling screw
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 81186
- Thread
- Self-drilling
- Drive
- TX
- Units
- mm
Representative geometry photograph. Material and finish are specified separately.
Technical drawing and legend
Ambrovit reference execution 81186
Drawing not to scale.
- dk
- Head diameter
- k
- Head height
- d
- External thread diameter
- P
- Thread pitch
- TX
- Hexalobular recess number
- 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 | dk | k | d | P | TX |
|---|---|---|---|---|---|---|
| 3,5 | Min. | 6,54 | 2,35 | 3,35 | ~1,30 | T15 |
| 3,5 | Max | 6,90 | 2,60 | 3,53 | ~1,30 | T15 |
| 3,9 | Min. | 7,14 | 2,55 | 3,73 | ~1,30 | T15 |
| 3,9 | Max | 7,50 | 2,80 | 3,91 | ~1,30 | T15 |
| 4,2 | Min. | 7,84 | 2,75 | 4,04 | ~1,40 | T20 |
| 4,2 | Max | 8,20 | 3,05 | 4,22 | ~1,40 | T20 |
| 4,8 | Min. | 9,14 | 3,25 | 4,62 | ~1,60 | T25 |
| 4,8 | Max | 9,50 | 3,55 | 4,80 | ~1,60 | T25 |
| 5,5 | Min. | 10,37 | 3,65 | 5,28 | ~1,80 | T25 |
| 5,5 | Max | 10,80 | 3,95 | 5,46 | ~1,80 | T25 |
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 81186 |
| Stainless steel A2 | To be specified in the quotation | King |
| Stainless steel A1 / A2; A4 | Executions for soft metals; finish to be specified | Tobsteel M |
| 1018–1022 steel | Cr3 zinc plating | Kilton 041TX |
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 |
|---|---|---|
| 3,5 | 2.250 | To be determined from the point and required length |
| 3,9 | 2.250 | To be determined from the point and required length |
| 4,2 | 2.250 | To be determined from the point and required length |
| 4,8 | 2.250 | To be determined from the point and required length |
| 5,5 | 2.250 | 4,00 |
Declared hardness for Ambrovit 81186: surface HV ≥ 560; core HV 270-425. Solid stainless executions for soft metals, such as aluminium, do not inherit case-hardened steel drilling values. Bimetallic screws require separate verification of the body and drill point.
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