Countersunk Head Self-Tapping Screws
Product Overview
This product is a self-tapping screw specifically designed for panel materials, with a thread diameter of 4.2mm and lengths ranging from 32–45mm. Made of heat-treated carbon steel with a triple-stage segmented thread design, finished with environmentally friendly trivalent chromium blue-white zinc electroplating plus wax lubrication treatment, and featuring a countersunk square-drive head, it is specifically engineered for PVC, wood-plastic composites, MDF, and other engineered panels. It is a versatile fastening consumable for interior decoration and furniture assembly.
Product Applications
Residential Decoration: Fixing wood-plastic wall panels, PVC ceilings, gypsum boards, ecological wood cladding, and wooden furring strips.
Furniture Factories: Assembly of cabinet components made from MDF and wood-plastic composite panels.
Signage/Display Industry: Fixing PVC foam boards and expanded sheets to wooden furring strips.
Other Indoor Scenarios: Assembly of decorative feature walls, partitions, and composite trim profiles.
Note: Suitable for dry indoor use only; not recommended for humid outdoor environments or coastal high-salt atmospheric conditions.
Product Features
Triple-Stage Segmented Thread: The fine-thread sharp point allows easy entry without pre-drilling; the middle coarse-thread section provides strong grip and high pull-out resistance; the upper plain shank section allows the head to sit fully countersunk, effectively preventing edge chipping and surface bulging of the panel.
Blue-White Zinc Plus Wax Dual-Layer Treatment: The zinc plating provides basic indoor corrosion resistance, while the surface wax layer reduces driving friction for smooth installation without damaging driver bits, and also seals micro-pores in the coating for enhanced rust protection.
Countersunk Square-Drive Design: Sits flush with the panel surface after installation for a clean finish; the square recess provides high torque transmission and resists stripping, making it suitable for power tool batch installation.
Multiple Size Options: Available in 32/38/45mm lengths to accommodate various decorative panels with thicknesses ranging from 12–25mm.
| Material | Carbon steel |
| Surface treatment | Blue-white zinc plating |
| Head type | Countersunk head |
| Slot type | Square recess |
| Thread type | Partial thread |
| Screw diameter | Approx. 4.2mm |
| Screw length | Optional (32mm to 45mm) |
| Screw type | Self-tapping screw |
| Corrosion resistance | Medium (suitable for indoor dry and humid environments) |
| Applicable tools | Square screwdriver or power tools |

+86 15856352820

malingfei@linghongscrew.com

No. 56, Baishizhan Road, Economic Development Zone, Langxi County, Xuancheng City, Anhui Province, China
