M4 SS Allen Countersunk Socket Screws
DIN 7991 M4 stainless steel hexagon socket countersunk head screws in A2 (304) grade. Conical head provides flush mounting with internal hex drive at 4mm thread diameter.
Specification
#
Standard
DIN 7991 (superseded by ISO 10642)
Thread
Coarse (standard)
Material
Stainless Steel 304 (A2)
Grade
A2-70
Stock
In stock (304). Grade 316 available against bulk order
Dimension
#
Size (d mm)
Thread Dia (min-max mm)
Pitch
Length (mm)
Thread Length (mm)
M3
2.98-3.00
0.5
6-30
Full thread
M6
5.97-6.00
1.0
10-60
Full thread
M8
7.96-8.00
1.25
12-80
Full thread
M10
9.96-10.00
1.5
16-100
Full thread
M12
11.95-12.00
1.75
20-120
Full thread
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
The 4mm stainless steel countersunk screw addresses flush-mounting requirements in corrosive environments. The conical head geometry provides self-centering alignment during installation, critical for multi-screw patterns on precision surfaces. A2-70 grade provides 700 MPa tensile strength with inherent corrosion protection. Hex socket drive delivers controlled torque transfer without cam-out. This diameter serves machine tool surfaces, food processing equipment, and architectural panels exposed to moisture.
Common Applications
#
M4 SS countersunk socket screws are specified for flush corrosion-resistant fastening:
- Machine tool beds and precision surfaces
- Conveyor belt guide rails
- Architectural metalwork and decorative panels
- HVAC equipment surfaces
- Electrical enclosure mounting plates
Read Me
| Standard | DIN 7991 (superseded by ISO 10642) |
| Thread | Coarse (standard) |
| Material | Stainless Steel 304 (A2) |
| Grade | A2-70 |
| Stock | In stock (304). Grade 316 available against bulk order |
| Size (d mm) | Thread Dia (min-max mm) | Pitch | Length (mm) | Thread Length (mm) |
|---|---|---|---|---|
| M3 | 2.98-3.00 | 0.5 | 6-30 | Full thread |
| M6 | 5.97-6.00 | 1.0 | 10-60 | Full thread |
| M8 | 7.96-8.00 | 1.25 | 12-80 | Full thread |
| M10 | 9.96-10.00 | 1.5 | 16-100 | Full thread |
| M12 | 11.95-12.00 | 1.75 | 20-120 | Full thread |
