M5 Allen Countersunk Socket Screws
DIN 7991 M5 hexagon socket countersunk head screws in alloy steel grade 12.9 with black oxide finish. Flat head seats flush in countersunk holes at 5mm thread diameter.
Specification
#
Standard
DIN 7991 / ISO 10642 (EN ISO 10642)
Material
Alloy Steel
Thread
Coarse (standard)
Grade
12.9
Coating
Black oxide
Head Type
Countersunk (flat head) with hexagon socket, 90° included angle
Drive Type
Hexagon socket (Allen key/hex wrench)
Stock
In stock
Dimension
#
Size (d mm)
Thread Dia (min-max mm)
Pitch
Length (mm)
Thread Length (mm)
M3
2.87-3.00
0.5
6-30
18
M5
4.85-5.00
0.8
8-50
22
M6
5.85-6.00
1.0
10-60
24
M8
7.83-8.00
1.25
12-80
28
M10
9.82-10.00
1.5
16-100
32
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
The 5mm countersunk socket screw provides a flush fastening solution where surface flatness is critical. The conical head geometry self-centres in the countersunk hole, improving positional accuracy during installation. Internal hex drive delivers controlled torque transfer without the cam-out associated with Phillips or slotted drives. At this thread size, the screw is suited to precision fixtures, jig plates, and aerospace panel assemblies where aerodynamic surface continuity matters. Alloy steel grade 12.9 ensures reliable clamp load in structural connections.
Common Applications
#
M5 countersunk socket screws are specified where flush surfaces are required:
- Machine tool ways and sliding surfaces
- Conveyor belt guide rails
- Bicycle frame and component assemblies
- Hydraulic manifold plates
- Mold and die parting surfaces
Read Me
| Standard | DIN 7991 / ISO 10642 (EN ISO 10642) |
| Material | Alloy Steel |
| Thread | Coarse (standard) |
| Grade | 12.9 |
| Coating | Black oxide |
| Head Type | Countersunk (flat head) with hexagon socket, 90° included angle |
| Drive Type | Hexagon socket (Allen key/hex wrench) |
| Stock | In stock |
| Size (d mm) | Thread Dia (min-max mm) | Pitch | Length (mm) | Thread Length (mm) |
|---|---|---|---|---|
| M3 | 2.87-3.00 | 0.5 | 6-30 | 18 |
| M5 | 4.85-5.00 | 0.8 | 8-50 | 22 |
| M6 | 5.85-6.00 | 1.0 | 10-60 | 24 |
| M8 | 7.83-8.00 | 1.25 | 12-80 | 28 |
| M10 | 9.82-10.00 | 1.5 | 16-100 | 32 |
