Bimetal composite self-drilling screws with composite washers

SS304 + SCM435 Bimetal Composite Self-Drilling Screw

The SS304/+ SCM435 bimetal composite self-drilling screw combines the advantages of SS304 stainless steel and SCM435 alloy steel, featuring excellent corrosion resistance, strong drilling capability and good fastening effect. The specific introduction is as follows:

- Excellent Corrosion Resistance: The head and locking part of the screw are made of SS304 stainless steel, which is austenitic stainless steel. It has good corrosion resistance, can effectively resist the erosion of acids, alkalis, salts and other substances, and can be used for a long time in harsh environments such as humidity and marine areas.
- Strong Drilling Capability: The drill tail part is made of SCM435 alloy steel. After a special heat treatment process, it has high hardness and good toughness, which can easily penetrate thick steel plates and hard steel plates, and even drill through 4mm stainless steel plates.
- Good Fastening Effect: The drill tail and tapping part have undergone special hardening treatment. After being driven into the iron plate, the stainless steel part can be smoothly introduced into the metal object, which can effectively avoid the seizing phenomenon caused by thread wear and deformation, achieve a good fastening effect, and maintain high tensile strength.
- High Construction Efficiency: The unique drill tail design makes it suitable for the installation and construction of various wall materials. In steel structure projects, it can achieve the cutting effect of light load and fast speed, which is 2-3 seconds faster than ordinary drill tails. It can reduce the workload of users and has more obvious advantages in special occasions such as high-altitude operations.
- Superior Surface Quality: It usually adopts a seamless welding process, with a smooth and round surface and no burrs to avoid hand injury. Moreover, surface treatment methods such as electro-galvanizing, zinc alloy coating or zinc-aluminum coating can be used to further improve the aesthetics and corrosion resistance, and also protect the drilled part of the iron plate from corrosion easily.