SS Round Head Machine Screw
Stainless steel round head machine screws per ISO 1207 / DIN 84 feature a narrow cylindrical cheese head with slotted drive and metric coarse threads from M2 to M10. Available in A2 (304) and A4 (316) grades per ISO 3506, suited for tight spaces and low-torque applications.
Specification
#
Standard
ISO 1207 / DIN 84
Thread
Coarse (standard)
Material
Stainless Steel 304 (A2)
Grade
A2-70
Stock
In stock (304). Grade 316 available against bulk order
Head Type
Round head (cheese head)
Drive Type
Slotted
Thread Tolerance
6g per ISO metric standards
Finish
Plain/Passivated (stainless steel)
Dimension
#
Size (d mm)
Thread Dia (min-max mm)
Pitch
Length (mm)
Thread Length (mm)
M3
2.98-3.00
0.50
10
10
M4
3.98-4.00
0.70
12
12
M5
4.98-5.00
0.80
16
16
M6
5.97-6.00
1.00
20
20
M8
7.97-8.00
1.25
25
25
- All dimensions in mm, tolerance +/- 0.01 mm. Additional dimensions available on request.
Benefits
#
Round head machine screws solve space-constraint problems in crowded electrical panels and compact assemblies where wider head profiles cannot fit between adjacent components. The narrow cheese head cylindrical profile occupies less lateral space than pan or hex heads, allowing tighter fastener spacing in dense terminal blocks and switchgear. Slotted drive installation requires only a flat-blade screwdriver, eliminating the need for specialized driver bits in field maintenance and repair scenarios. Stainless steel construction provides reliable corrosion resistance in electrical enclosures exposed to condensation and atmospheric moisture without the coating degradation issues that affect plated carbon steel fasteners. The simple head geometry and slotted drive keep manufacturing costs lower than cross-recessed alternatives, making these screws economical for high-volume light-duty assemblies where torque requirements are modest.
Common Applications
#
Round head machine screws are selected for applications where narrow head profile and simple hand-tightening installation are priorities.
- Electrical panels, switchgear, and terminal blocks
- Light-duty machinery and equipment assembly
- Instrumentation and control panel mounting
- Vintage and legacy equipment restoration
- Lighting fixture assembly and mounting
- Small appliance manufacturing
- Decorative hardware and fittings
- Low-torque fastening in confined spaces
Read Me
| Standard | ISO 1207 / DIN 84 |
| Thread | Coarse (standard) |
| Material | Stainless Steel 304 (A2) |
| Grade | A2-70 |
| Stock | In stock (304). Grade 316 available against bulk order |
| Head Type | Round head (cheese head) |
| Drive Type | Slotted |
| Thread Tolerance | 6g per ISO metric standards |
| Finish | Plain/Passivated (stainless steel) |
| Size (d mm) | Thread Dia (min-max mm) | Pitch | Length (mm) | Thread Length (mm) |
|---|---|---|---|---|
| M3 | 2.98-3.00 | 0.50 | 10 | 10 |
| M4 | 3.98-4.00 | 0.70 | 12 | 12 |
| M5 | 4.98-5.00 | 0.80 | 16 | 16 |
| M6 | 5.97-6.00 | 1.00 | 20 | 20 |
| M8 | 7.97-8.00 | 1.25 | 25 | 25 |
