M4 SS Allen Button Head Socket Screws
ISO 7380-1 M4 stainless steel hexagon socket button head screws in A2 (304) grade. Rounded dome head provides smooth surfaces and reduced head height at 4mm thread diameter.
Specification
#
Standard
ISO 7380-1 (plain button head) / ISO 7380-2 (button head with collar/flange)
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
6-25
Full thread
M5
4.97-5.00
0.8
8-40
Full thread
M6
5.97-6.00
1.0
10-50
24
M8
7.96-8.00
1.25
12-60
28
M10
9.96-10.00
1.5
16-80
32
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
The 4mm stainless steel button head socket screw addresses fastening in environments where plated carbon steel fasteners would corrode. The domed head distributes bearing load while maintaining a smooth, catch-free surface. A2-70 grade provides 700 MPa tensile strength with inherent corrosion protection. Hex socket drive enables controlled torque application without external wrench clearance. This diameter serves enclosures, panels, and light assemblies exposed to moisture, condensation, or atmospheric weathering.
Common Applications
#
M4 SS button head socket screws are specified for corrosion-resistant low-profile fastening:
- Machine guards and safety enclosures
- HVAC ductwork and equipment mounting
- Conveyor system covers and guards
- Architectural metalwork and handrails
- Marine interior fittings (A2 grade)
Read Me
| Standard | ISO 7380-1 (plain button head) / ISO 7380-2 (button head with collar/flange) |
| 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 | 6-25 | Full thread |
| M5 | 4.97-5.00 | 0.8 | 8-40 | Full thread |
| M6 | 5.97-6.00 | 1.0 | 10-50 | 24 |
| M8 | 7.96-8.00 | 1.25 | 12-60 | 28 |
| M10 | 9.96-10.00 | 1.5 | 16-80 | 32 |
