Inner Hex Large Flat Head Screws
- Materials: Common materials include carbon steel, stainless steel, alloy steel, etc.
- Surface treatments: galvanizing (white zinc, colored zinc, etc.) can prevent rust to a certain extent; nickel-plating can improve surface hardness and aesthetic appearance; Dacromet coating has excellent corrosion resistance and is suitable for harsh environments.
- Application fields: Furniture manufacturing, electronics and electrical appliances, sheet metal processing, and building decoration.
Structural Features of Inner Hex Large Flat Head Screws
Head
The head is flat and has a relatively large diameter. This design increases the contact area with the connected parts, which can more effectively disperse the pressure and prevent the surface of the connected parts from being damaged due to excessive local pressure. It is suitable for fixing thin – sheet materials or applications that require a large supporting area. In the middle of the head is a concave hexagonal hole, which needs to be tightened or loosened with an Allen wrench. The hexagonal socket structure makes the contact between the wrench and the screw head closer. It is not easy to slip when applying force, and can provide a relatively large torque.
Shank
It has standard threads and is used to screw into nuts or the threaded holes of connected parts to achieve a fastening connection. There are various thread specifications, such as the common M3, M4, M5, M6, M8, etc. Different specifications are suitable for different load – bearing requirements and installation spaces.
Advantages and Disadvantages of Inner Hex Large Flat Head Screws
Advantages:
- A large supporting area effectively protects the connected parts.
- Easy to install and can be operated with an Allen wrench.
- Strong anti-pull-out ability; the large, flat head is not easily pulled out.
- Good anti-loosening performance; wide head reduces the risk of loosening.
- Relatively aesthetically pleasing in appearance.
Disadvantages:
- Large head size limits its use in compact spaces.
- Strength is limited compared to some high-strength screws; not suitable for high-strength connections.
- The head cannot be completely sunk into the material, making it unsuitable for applications requiring a completely flat surface.
