China Suppliers Factory Steel Self-Tapping Screws for Roofing Tiles on Steel Frames - Corrosion Resistant and Durable
Product Specifications
| Product Name | Hole-expanding self-tapping screw |
| Material | Galvanized steel |
| Size | 5.5 * 75mm ; 6.3 *75mm ; 6.3 * 145mm |
| Weight | 14g/pc |
| Service life | 50 years |
The installation is simple and fast, greatly shortening the construction period and reducing installation costs, while ensuring the construction quality, bringing users a more economical and easy-to-maintain roof solution.
Frequently Asked Questions
QWhat is the main benefit of the Hole-expanding self-tapping screw?
It offers a simple and fast installation process that significantly shortens the construction period, reduces labor and installation costs, and provides an economical, easy-to-maintain roof solution.
QWhat material is used to manufacture these screws?
These screws are made of high-quality Galvanized steel, which provides excellent corrosion resistance and structural durability.
QWhat sizes are available for this product?
We offer three standard sizes to suit different project needs: 5.5 * 75mm, 6.3 * 75mm, and 6.3 * 145mm.
QWhat is the expected service life of these self-tapping screws?
Thanks to the robust galvanized steel construction, these screws have an expected service life of up to 50 years.
QHow much does each individual screw weigh?
Each hole-expanding self-tapping screw has a unit weight of approximately 14 grams.





