3.5×7×22-51 Cr6 ZINC Light-Gauge Countersunk Ribbed Screw

Product Overview
This light‑gauge countersunk ribbed drywall screw is a dedicated fastener designed for indoor light‑gauge steel ceiling and partition systems, and is one of the core components for gypsum board installation. The model introduced here is 3.5×7×22‑51 Cr6 blue‑white zinc plated, made of high‑quality carbon steel with a blue‑white zinc coating. It features an integrated design with a countersunk head, ribs, and a self‑tapping sharp point, which can directly penetrate gypsum board and firmly bite into light‑gauge steel framing without pre‑drilling, greatly improving construction efficiency while ensuring flatness and long‑term stability of walls and ceilings. It is a commonly used screw in residential and commercial ceiling and partition projects.

Product Applications
Mainly used in residential and commercial light‑gauge steel ceiling and partition projects, for fixing gypsum boards and calcium silicate boards to light‑gauge steel framing. It can also be used for fixing indoor light decorative panels, acoustic panels, and metal framing.