Frequently Asked Questions
What are the primary applications for DIN7504 self-drilling screws?
DIN7504 self-drilling tapping screws are designed for fastening metal to metal or metal to wood without the need for pre-drilling. They are widely used in roofing, HVAC, and steel frame construction.
Which materials are available for these screws?
We offer these screws in high-grade 304 Stainless Steel, 316 Stainless Steel for superior corrosion resistance, and high-strength Carbon Steel for general construction needs.
Do these screws comply with international quality standards?
Yes, our self-drilling screws are manufactured to meet several international standards, including DIN, ISO, JIS, and AISI, ensuring consistent quality and performance.
What is the available size range?
Our standard size range for DIN7504 screws starts from ST2.2 and goes up to ST6.3, covering a wide variety of industrial and commercial requirements.
How do I choose between 304 and 316 stainless steel?
304 Stainless Steel is excellent for standard outdoor use. However, if your project is located in a coastal area or highly corrosive environment, 316 Stainless Steel is recommended due to its higher resistance to chlorides.
Can these screws drill through thick steel plates?
The drilling capacity depends on the screw size and point type. Generally, ST screws are optimized for sheet metal and light structural steel, providing rapid penetration and secure fastening.
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