Countersunk Head Self-Tapping Screws
Product Overview
This screw is available in lengths from 19–51mm and offers two thread versions: coarse and fine. Made of 1022A carburized steel, quenched and formed, with a yellow-zinc anti-corrosion finish, combined with a double countersunk head, Phillips recess, and self-tapping sharp point, it is a versatile wood fastening component for furniture and interior decoration, available in a full range of specifications to suit various panel thicknesses.
Product Applications
Whole-Home Customization: Panel joining and frame fixing for wardrobes, kitchen cabinets, wooden doors, flooring, wall panels, and tatami platforms.
Interior Decoration: Installation of wooden joist ceilings, door frames, baseboards, decorative moldings, and wood backing/blocking.
Other Scenarios: Fastening of shelving, display cabinets, light wooden structures, as well as non-metallic panels such as PVC and MDF.
Note: Suitable for indoor use only; not recommended for outdoor applications. Pre-drilling a pilot hole is advised when working with hardwoods.
Product Features
Double Countersunk Head Design: Sits completely flush with the material surface after fastening, leaving no protrusions. The dual tapered surfaces reduce edge chipping and material splitting, ensuring a clean, attractive finish.
Phillips Sharp-Point Self-Tapping: The Phillips recess is compatible with standard drivers, providing secure engagement and reduced slippage; the sharp point eliminates the need for pre-drilling, allowing direct driving into wood for efficient installation.
Coarse & Fine Thread Options: Coarse threads offer strong holding power, suitable for softwood and load-bearing cabinets; fine threads provide reduced cutting resistance, making them ideal for hardwood and thin panels where blowout prevention is important.
Yellow-Zinc Rust-Proof Coating: Provides corrosion resistance in indoor, mildly humid environments; the coating is wear-resistant and not prone to peeling, with a uniform finished appearance.
Balanced Specifications & Strength: Available in dual shank diameters with full length coverage; the hardened screw shank resists bending and breaking during tightening, ensuring stable load-bearing performance.
| Material | Carbon steel |
| Surface treatment | Color zinc plating |
| Head type | Double countersunk head |
| Slot type | Cross recess |
| Thread type | Partial thread (coarse/fine thread) |
| Screw diameter | Approx. 4.2mm |
| Screw length | Optional (19mm to 51mm) |
| Screw type | Self-tapping screw |
| Corrosion resistance | Medium (suitable for indoor dry and humid environments) |
| Applicable tools | Phillips screwdriver or power tools |

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malingfei@linghongscrew.com

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