ISO 10642 Countersunk Socket Screw
Countersunk socket screw with internal hex drive, designed for flush joints, precision machining, industrial machinery, metal housings and assemblies where the screw head must not protrude from the surface.
A screw designed to integrate into the part
The ISO 10642 screw is a countersunk socket screw with a conical head. Its geometry allows the head to sit inside a countersunk seat, leaving the outer surface clean, flat and free from protrusions.
It is commonly used in machined parts, metal housings, guides, covers, fixtures and assemblies where secure fastening is required without interfering with movement, assembly or the external finish.
Conical head
Allows the screw to sit inside a countersunk seat and reduces external protrusions.
Internal hex
Enables tightening with an Allen key even in areas with limited access.
Flush finish
Improves visual integration and avoids interference with other components.
Technical assembly
Suitable for machinery, housings, mechanisms, guides and visible parts.
Main characteristics of ISO 10642
The ISO 10642 standard defines a countersunk socket screw designed for joints where the head must be recessed and aligned with the mounting surface.
Technical geometry and standardized dimensions
The geometry of ISO 10642 is designed to work with a countersunk seat. The conical head rests against the machined cone and allows the outer surface to remain free from obstacles.
Common materials, grades and finishes
Technical materials
- Carbon steel 8.8 · general industrial use
- Carbon steel 10.9 · higher mechanical strength
- A2 stainless steel · indoor or moderate humidity environments
- A4 stainless steel · outdoor or corrosive environments
Finishes and treatments
- Zinc plated · standard surface protection
- Black oxide · dark technical finish
- Natural stainless · corrosion resistance
- Special coatings · according to project requirements
Material selection should be based on load, corrosion, temperature, working environment, tightening torque and traceability requirements.
Common ISO 10642 dimensions
| Metric size | Head type | Drive | Common use |
|---|---|---|---|
| M3 | Countersunk | Socket | Small components |
| M4 | Countersunk | Socket | Housings and covers |
| M5 | Countersunk | Socket | Fixtures and supports |
| M6 | Countersunk | Socket | Industrial assemblies |
| M8 | Countersunk | Socket | Guides and assemblies |
| M10 | Countersunk | Socket | Industrial machinery |
| M12 | Countersunk | Socket | Robust applications |
Indicative table. For manufacturing, technical purchasing or dimensional verification, the complete ISO 10642 standard dimensions and the tolerances applicable to the project should be consulted.
Common industrial applications
ISO 10642 compared with other socket screws
The right choice depends on the required finish, part geometry, available space and whether a completely flush outer surface is needed.
Countersunk head
- Sits flush with the surface
- Requires a countersunk seat
- Clean external finish
- Ideal for housings and visible parts
Cylindrical head
- Higher external head height
- Higher tightening capacity
- Does not sit flush
- General use in machinery
Button head
- Low and rounded profile
- No countersinking required
- Good visual finish
- Lower capacity than cylindrical head
A clean fastening solution for technical surfaces
No surface protrusions
Avoids interference with moving parts, guides, covers or nearby mechanisms.
Clean visual finish
The head integrates into the assembly and improves the final presentation.
Secure socket assembly
The internal hex drive allows torque to be applied in reduced-access areas.
Machining compatible
Works with countersunk seats manufactured according to drawing or standard.
Standardized screws and custom machined parts
At AREM-CNC, we work with standardized components and machined parts according to drawing or technical standard, with certified materials, dimensional control and complete traceability.