7.5x100 (Silver Therma-Plus) Torx Countersunk Ribbed Window-Type Concrete Screw

Product Overview
This product is a window‑dedicated concrete self‑tapping screw, specification 7.5×100 mm, manufactured from carburized hardened carbon steel substrate, with a silver Therma‑Plus anti‑corrosion coating. Featuring a Torx countersunk ribbed head and self‑cutting thread, it can be directly fixed into walls after drilling without expansion anchors. It is suitable for the installation of thermal‑break aluminium, uPVC, and aluminium alloy windows and doors, balancing anchoring strength with outdoor rust protection.

Product Applications
Suitable Profiles: uPVC windows, thermal‑break aluminium doors and windows, aluminium sliding doors, and sunroom framing for anchoring.
Compatible Walls: Concrete, red brick, cement brick, aerated blocks, and other hard wall substrates.
Applicable Scenarios: Residential fine decoration, building window projects; the 7.5×100 size suits window frames of 30–50 mm thickness, and can be used in both indoor and outdoor balcony humid environments.