Countersunk Head Wood Screws
Product Overview
This high-performance Ruspert-coated anti-corrosion wood screw is a high-strength self-tapping fastener specifically designed for wood-structure fixing applications. Featuring an integrated design that combines a non-slip mesh-pattern countersunk head, torque-breaking ribs, and a split-point sharp tip, together with an eco-friendly Ruspert anti-corrosion coating, it delivers high installation efficiency, strong fastening performance, and long-lasting rust resistance. It is an ideal choice for outdoor treated-wood projects and indoor wood-structure installations in humid environments.
Product Applications
Suitable for outdoor treated-wood decks, fences, and wooden house frames; indoor wall paneling/furniture installation in humid environments; and fixing heavy wood structures such as hardwoods and multilayer plywood.
Product Features
Non-slip mesh-pattern cross-recessed countersunk head: Compatible with standard driver bits; the knurled mesh pattern prevents slipping. The countersunk head embeds fully into the wood without affecting the flatness of the finished surface.
Torque-breaking rib design: Enhances pull-out resistance and prevents loosening, while also reducing wood expansion stress to effectively avoid splitting of the material.
Split-point sharp tip structure: Self-tapping capability eliminates the need for pre-drilling; the cutting grooves aid chip evacuation and reduce resistance, allowing easy driving even into hardwoods.
Ruspert anti-corrosion coating: Offers far superior rust protection compared to conventional zinc plating, with salt spray test performance reaching 500–1,500 hours. Suitable for outdoor and humid environments, with no risk of hydrogen embrittlement.
| Material | Carbon steel |
| Surface treatment | Silver anti-rust coating |
| Head type | Countersunk |
| Slot type | Cross recess |
| Thread type | Deep thread |
| Screw diameter | Approx. 3.9mm |
| Screw length | 38mm |
| Screw type | Wood screw |
| Corrosion resistance | High (suitable for humid, coastal environments) |
| Applicable tools | Cross screwdriver or power tools |

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malingfei@linghongscrew.com

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