Product Specifications
| Model / Specification | M1.6-M10 |
| Material | Carbon steel, Stainless steel, Brass |
| Thread size d | M1.6 | M2 | M2.5 | M3 | M4 | M5 | M6 | M8 | M10 | |
|---|---|---|---|---|---|---|---|---|---|---|
| P | Pitch | 0.35 | 0.4 | 0.45 | 0.5 | 0.7 | 0.8 | 1 | 1.25 | 1.5 |
| a | Max. | 0.7 | 0.8 | 0.9 | 1 | 1.4 | 1.6 | 2 | 2.5 | 3 |
| dk | Max. | 6 | 7 | 9 | 11 | 14 | 17 | 20 | 25 | 30 |
| Min. | 5.82 | 6.78 | 8.78 | 10.73 | 13.73 | 16.73 | 19.67 | 24.67 | 29.67 | |
| da | Max. | 2.1 | 2.6 | 3.1 | 3.6 | 4.7 | 5.7 | 6.8 | 9.2 | 11.2 |
| k | Max. | 1.2 | 1.4 | 1.8 | 2 | 2.8 | 3.5 | 4 | 5 | 6 |
| Min. | 1.06 | 1.26 | 1.66 | 1.86 | 2.66 | 3.32 | 3.7 | 4.7 | 5.7 | |
| n | Nominal | 0.4 | 0.5 | 0.6 | 0.8 | 1.2 | 1.2 | 1.6 | 2 | 2.5 |
| Max. | 0.6 | 0.7 | 0.8 | 1 | 1.51 | 1.51 | 1.91 | 2.31 | 2.81 | |
| Min. | 0.46 | 0.56 | 0.66 | 0.86 | 1.26 | 1.26 | 1.66 | 2.06 | 2.56 | |
| r | Min. | 0.1 | 0.1 | 0.1 | 0.1 | 0.2 | 0.2 | 0.25 | 0.4 | 0.4 |
| t | Min. | 0.6 | 0.7 | 0.9 | 1 | 1.4 | 1.7 | 2 | 2.5 | 3 |
| R | ≈ | 10 | 12 | 14 | 16 | 20 | 25 | 30 | 36 | 40 |
| re | ≈ | 2.24 | 2.8 | 3.5 | 4.2 | 5.6 | 7 | 8.4 | 11.2 | 14 |
| Weight ≈ kg / 1000 pcs | - | - | - | - | - | - | - | - | - | |
Dimensions in mm. The bracketed sizes ((4.5), (5.5), (7)) are non-preferred. Data compiled from GB 947-1988 for selection reference only; actual supply is subject to drawings and inspection reports.
Product Overview
The slotted raised cheese head screw is manufactured to GB 947-1988. The screw has a large cylindrical (cheese) head with a domed top and a single straight slot, driven with a flat-blade screwdriver. The large head provides a big bearing area and a neat appearance. It is widely used in machinery, instruments, electrical appliances and applications that need a larger bearing surface.
1. Product Features
- Large cylindrical head with a big bearing area that does not easily crush the joined part.
- Domed (raised) top for a rounded, neat appearance.
- Single slotted drive, driven with a flat-blade screwdriver.
- Sizes from M1.6 to M10.
- Materials: carbon steel, stainless steel and brass.
2. Product Advantages
- The large head distributes compressive stress and protects the joined surface.
- The domed head looks neat and suits applications with appearance requirements.
- High degree of standardisation: the GB 947 dimensional system is complete, which simplifies export matching and second sourcing.
- Material and surface finish can be customised to balance strength, corrosion resistance and cost.
3. Application Scope
- Fastening in machinery and instruments.
- Housing fixing in electrical and electronic products.
- Joining in woodwork, furniture and decorative parts.
- Stainless steel and brass versions suit damp, decorative or mildly corrosive environments.
