Painted Hex Head Self-Drilling Screw

1. Applicable fields

This product is a special fastening screw for exposed roofs. The colored paint cap can match steel tiles of various colors. It is widely used in steel structure workshops, sunrooms, photovoltaic roofs, and color steel enclosure projects. It is widely used in outdoor open-air scenes. It comes with a drill point to avoid drilling holes. The short version is fixed with a single layer of color steel, and the long version is suitable for thin sandwich panels. It takes into account the dual needs of decoration and waterproofing. It has been exported to overseas infrastructure and building materials markets all year round.

2. Raw materials and production processes

The self-drilling screw uses high-quality carbon steel quenching, which makes drilling holes in regular-thickness steel sheets less likely to break. Production process: rough drawing of raw materials – annealing, phosphating, fine drawing, cold heading forming, tail point forming, screw thread rolling, heat treatment modulation and processing, flange head high temperature electrostatic spraying, washer assembly, packaging eleven processes. The paint surface has strong adhesion and is not easy to peel or fade when exposed to the sun; the EPDM rubber pad is UV-resistant and anti-aging, and will not harden or crack in the open air for a long time.

3. Product core advantages

Integrated color matching and decoration: A variety of color spray paint caps are matched with the color steel tiles to make the finished roof neat and beautiful, eliminating the need for later sealing and beautification processes.

Double-layer sealing and waterproofing: The inner layer of thickened rubber gasket closely fits the panel surface, seals the screw holes to isolate rainwater penetration, and prevents roof screw leakage from the source.

4. Quality control warehousing and supporting services

The full range of specifications are always in stock, regular orders are dispatched within 48 hours, and engineering projects and full-container exports are prioritized for production. The paint adhesion, drill point hardness, and rubber pad bonding strength are randomly inspected before leaving the factory, and defective products with peeling paint and broken tips are eliminated. It can be equipped with bare-head vinyl hexagonal drill points for stock in complete sets; it supports customized exclusive colors and special length nonstandard drill points for incoming samples, and can stably provide long-term supply for various roofing projects.