Products Description
The Bi-Metal Self Tapping Screw is a revolutionary fastening solution. It combines the hardness of high - carbon steel in the thread part and the toughness of low - carbon steel in the shank, creating a screw with excellent performance. The high - carbon steel thread ensures easy penetration into various materials, while the low - carbon steel shank provides the necessary flexibility to prevent breakage during installation and under stress.
Specifications:
Diameter: Available in diameters ranging from M2 to M10.
Length: Lengths vary from 6mm to 100mm to meet different application needs.
Tensile Strength: The shank has a tensile strength of at least 400MPa, while the thread part can withstand a tensile strength of over 800MPa.
Corrosion Resistance: After surface treatment, it can pass the 48 - hour salt spray test, ensuring long - term use in various environments.
Products Process
Material Selection: High - quality high - carbon steel for the thread section and low - carbon steel for the shank are carefully chosen.
Forming: The two types of steel are first shaped separately through cold heading or hot forging processes.
Assembly: The shaped thread part and shank are then precisely joined together using advanced welding techniques to ensure a seamless connection.
Thread Rolling: After assembly, the thread is rolled to the required specifications, enhancing its strength and precision.
Surface Treatment: Finally, the screw undergoes surface treatment such as zinc plating or black oxide coating to improve corrosion resistance.
Products Application
Automotive Industry: Used in the assembly of automotive interior components, engine parts, and body panels. The bi - metal structure can withstand the vibrations and stresses in vehicles.
Electronics Manufacturing: Ideal for securing electronic components to printed circuit boards. The precise thread and anti - breakage shank are crucial for delicate electronics.
Furniture Making: For attaching wooden parts, metal fittings, and plastic components in furniture, providing a strong and reliable connection.
Construction and DIY Projects: Suitable for general construction work, such as fixing drywall to metal studs or assembling small - scale structures.
FAQ
Q1: Are these screws suitable for use in high - temperature environments?
A1: The Bi - Metal Self Tapping Screw has a certain heat resistance. However, continuous exposure to temperatures above 200°C may affect its performance. For high - temperature applications, it is recommended to consult our technical department for specific advice.
Q2: Can I use these screws for outdoor applications?
A2: Yes, after proper surface treatment like zinc plating, these screws have good corrosion resistance and can be used in outdoor environments. But for extremely harsh outdoor conditions, additional protective measures may be required.
Q3: What tools are needed for installing these screws?
A3: Standard screwdrivers or power drills with appropriate screw - driving bits can be used for installation. The choice depends on the specific application and the quantity of screws to be installed.
Q4: Are these screws corrosion-resistant?
Yes, the screws are coated with corrosion-resistant finishes like zinc or black oxide, making them ideal for outdoor and exposed environments.
Q5: How do I select the right size screw for my project?
Select the screw size based on the thickness of the material you are fastening and the load requirements. It's important to choose a screw with the correct length and diameter for a secure fit.
Q6: Can these screws be reused?
While these screws are designed for one-time use, reusing them may affect the integrity of the thread and the self-tapping point. It's best to use new screws for maximum performance.
Q7: Are these screws suitable for high-torque applications?
Yes, the bi-metal construction ensures excellent durability and performance under high torque, making these screws suitable for heavy-duty applications.
Q8: How can I prevent the screws from rusting over time?
To prevent rust, ensure the screws are stored in a dry, cool environment and are used in the correct conditions for their coating. The corrosion-resistant coating offers protection, but extreme conditions may require additional care.
Q9: What industries typically use bi-metal self-tapping screws?
These screws are commonly used in industries such as construction, automotive manufacturing, HVAC, and electrical installations, thanks to their strength, versatility, and corrosion resistance.
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