SS Allen Button Head Socket Screws
Stainless steel hexagon socket button head screws to ISO 7380-1/2 in A2-70 grade with coarse thread. M3 to M10 range with low-profile rounded head and internal hex drive, head loadability rated at 80% of thread capacity.
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
#
Button head socket screws solve the problem of fastening in applications where a low-profile, snag-free surface is needed without the added manufacturing step of countersinking. The rounded dome head sits close to the workpiece, eliminating sharp edges and protrusions that catch on personnel, clothing, or adjacent components. The internal hex socket enables high-torque installation using an Allen key in confined spaces where external wrench access is unavailable. Stainless steel construction eliminates the need for protective coatings and provides reliable corrosion resistance in atmospheric, marine, and chemical environments. The button head form distributes clamp load across a wider area than socket head cap screws while maintaining a compact footprint. For engineers designing machine guards, enclosures, and panels, these screws provide a clean finish and reliable retention without the cost and time of counterbore or countersink hole preparation.
Common Applications
#
These screws are specified where a smooth, near-flush fastener profile is required without countersinking:
- Machine guards and safety enclosures
- Electrical enclosures and control panels
- Sheet metal assembly and thin-wall structures
- HVAC ductwork and equipment mounting
- Conveyor systems and material handling equipment
- Robotics and automation frames
- Instrumentation and sensor mounting
- Marine deck hardware (A4/316 grade)
- Food processing equipment (A4/316 grade)
- Architectural metalwork and handrails
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 |
