SS Countersunk Machine Screw
Stainless steel countersunk machine screws per ISO 7046 / DIN 965 in A2-70 grade with coarse thread. 90° conical head sits flush with the material surface in M2 to M12 range with Phillips or Pozi cross-recessed drive.
Specification
#
Standard
ISO 7046 / DIN 965
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
M4
3.97-4.00
0.7
8-40
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
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
Countersunk machine screws solve the engineering problem of protruding fastener heads interfering with assembly function, aerodynamics, or surface continuity. The 90° conical head seats into a machined recess, creating a flush surface that prevents snagging on adjacent components, clothing, or tooling during operation. In aerospace and automotive applications, the smooth surface profile reduces aerodynamic drag across panel joints. The flush finish also supports sealing requirements where gaskets or O-rings must seat against a flat surface without fastener head interference. Stainless steel construction provides corrosion resistance in environments where plated fasteners would degrade, and the cross-recessed drive allows controlled torque application during installation. The conical head geometry provides self-centering action in the countersunk hole, improving alignment during automated assembly processes.
Common Applications
#
Countersunk machine screws are specified where flush surface finish and aerodynamic or safety requirements drive the fastener selection.
- Aerospace panels, fairings, and structural assemblies
- Automotive body panels and exterior trim
- Electronics enclosures and equipment covers
- Marine deck hardware and hull fittings
- Medical equipment housings and instrument panels
- Precision instruments and optical equipment
- Architectural metalwork and facade panels
- Machinery guards and safety covers
- Furniture and cabinetry hardware
- Signage and display mounting systems
Read Me
| Standard | ISO 7046 / DIN 965 |
| 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 |
| M4 | 3.97-4.00 | 0.7 | 8-40 | 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 |
