Pan Head Phillips Hi-Lo Thread Self-Tapping Screw (Silver Rust-Proof Coating)

Product Overview
This product is a pan head Phillips hi‑lo thread self‑tapping screw for concrete, made of high‑strength carbon steel substrate with a chromium‑free, environmentally friendly rust‑proof coating (Rust‑Proof Silver). Designed for hard substrates such as concrete and lightweight walls, it requires no pre‑installed expansion anchors. After pre‑drilling, it can be driven directly into the base material, combining easy installation, high locking force, and long‑term corrosion resistance. It is suitable for a wide range of fastening applications in construction, home decoration, and outdoor engineering.

Product Applications
Widely used in building and home decoration (fixing wall shelves, curtain rods, air‑conditioning brackets), door/window curtain walls (connecting aluminium/plastic‑steel windows and doors to concrete), and outdoor projects (outdoor railings, light steel keels, exterior wall cladding). It is also suitable for fastening in lightweight substrates such as aerated concrete blocks and hollow bricks, as well as certain hard base materials. This screw serves as a highly efficient alternative to traditional expansion anchors.