4.2*32-45 Three-Step Blue-White Zinc With Wax Plastic Board Screw

Product Overview
This product is a self‑tapping screw specifically designed for boards, with a thread diameter of 4.2 mm and lengths covering 32‑45 mm. It is made of heat‑treated carbon steel substrate, featuring a three‑step segmented thread structure, with a surface treated by environmentally friendly trivalent chromium blue‑white zinc electroplating plus wax lubrication. The countersunk square drive design is specifically crafted for composite boards such as PVC, wood‑plastic composites, and MDF, making it a general‑purpose fastening consumable for interior decoration and furniture assembly.

Product Applications
Home Renovation: Fixing wood‑plastic wall panels, PVC ceilings, gypsum boards, eco‑wood cladding, and wood joists.
Furniture Factories: Assembly of MDF and wood‑plastic composite board cabinets.
Advertising Industry: Fixing PVC foam boards and expanded boards to wood framing.
Other Indoor Scenarios: Installation of decorative feature walls, partitions, and composite trim.
Note: Suitable for dry indoor environments only; not recommended for outdoor, humid, or coastal high‑salt spray conditions.