Stainless Steel Half Thread Full Thread Pan Head Torx Drive Self Tapping Screw Wood Screw

This product is a 304 stainless steel headless star self-drilling screw (also known as round-head star-shaped self-drilling screw or anti-theft self-drilling nail). It is a universal fastener that combines convenient installation, anti-theft and anti-disassembly, as well as rust and corrosion prevention. The product is made of food-grade 304 austenitic stainless steel as the core material. It is formed through precise cold heading, high-precision thread rolling, and passivation anti-rust processes. It comes with a self-drilling tail design, allowing it to be directly screwed into wood, plastic, thin metal plates and other substrates without the need for pre-drilling. It is equipped with a star (Torx) drive slot to achieve anti-theft and anti-disassembly effects. It is widely applicable to various scenarios such as home decoration, industry, and outdoor use, providing stable, long-lasting, and safe fastening solutions for all kinds of connections.

High-quality 304 stainless steel substrate, with full protection against rust and corrosion

Crafted with national standard 304 stainless steel (06Cr19Ni10), with compliant nickel chromium content, non-magnetic, non-toxic and harmless, featuring excellent resistance to acid and alkali, corrosion and rust, capable of long-term use in humid, outdoor, coastal, chemical and other complex environments, without rusting or oxidizing, fully meeting food-grade and medical-grade usage standards, with a service life far exceeding carbon steel self-tapping screws.

Disc head with flower-shaped groove design, dual advantages of anti-theft and installation

The round disc head design fits the installation surface, is beautiful and not obtrusive; compared to traditional cross/straight slots, the Torx star-shaped drive groove distributes force more evenly and is less prone to slipping, and can only be disassembled with a dedicated Torx wrench, possessing anti-theft and anti-disassembly attributes, effectively preventing malicious disassembly, while balancing installation convenience and safety.

Self-tapping tail design, direct installation without pre-drilling

The tip adopts self-tapping cutting design, with full and sharp screw thread, which can directly be screwed into wood, plastic, gypsum board, thin aluminum plate and other substrates, without the need for pre-drilling and self-tapping, significantly improving installation efficiency and reducing construction costs, suitable for DIY home improvement, batch assembly and other scenarios.

High-precision craftsmanship, with full attention to details

Using fully automatic cold heading + thread rolling technology, the screw thread has high precision, no burrs, no slippage, tight fit, anti-loosening and anti-vibration; the surface is treated with passivation + mirror polishing, high gloss, no scratches, bright appearance, and at the same time enhances corrosion resistance, reduces stress concentration and improves fatigue resistance.

Full specification coverage, suitable for diverse needs

Covering the full range of M2-M6 screw thread specifications, with lengths from 6mm to 50mm, all categories are supplied, and also supports non-standard customization, capable of meeting all scenarios of tightening requirements from small-scale precision assembly to large-scale outdoor projects.

Anti-theft and anti-disassembly, security upgrade: The plum blossom groove structure cannot be disassembled by non-specific tools. It perfectly fits scenarios requiring anti-theft measures, such as outdoor facilities, public equipment, and valuable furniture. It fundamentally prevents malicious disassembly and ensures connection security.

Highly efficient, multi-purpose with one installation: The self-drilling tip tail design eliminates the need for screws and nuts, allowing for direct insertion for easy fastening. It is compatible with various substrates such as wood, plastic, and thin metals. Suitable for home decoration, industrial, and outdoor applications, significantly reducing the difficulty and cost of construction.

Durable and long-lasting: The 304 stainless steel material inherently possesses excellent rust prevention properties. It can be used for a long time in outdoor, humid, and high-salt spray environments without rusting. There is no need for frequent replacement, and the maintenance cost is extremely low. The long-term use offers a much higher cost-effectiveness compared to carbon steel screws.

Uniform force distribution, no risk of teeth slipping: Compared to the cross-slot drive structure, the梅花槽 drive structure has a larger force-bearing area and more stable torque transmission. When tightening, it is less likely to slip or get distorted， allowing for precise control of the preload force， ensuring long-term stability of the connection， and suitable for batch installation of electric tools.

Full-process quality control, reliable quality: From the spectral inspection of raw materials upon entry to the size inspection during the production process, to the salt spray test and mechanical performance testing at the time of product delivery, the entire process adheres to the ISO 9001 quality management system. Each batch of products has consistent performance and is traceable, ensuring a reliable purchase and a worry-free use.

Woodworking & Furniture: Assembles cabinets, shelves, and wooden fixtures, with self-tapping threads eliminating pre-drilling in softwoods (pine, cedar).

Plastic & Composite Materials: Fastens PVC panels, polyethylene sheets, and composite decking, with full-thread design preventing material splitting.

Thin Metal Fabrication: Secures aluminum sheets and steel frames (≤2mm), with Type B threads reducing burr formation in metal installations.

DIY Projects: Ideal for home repairs, craft projects, and garden furniture, with Torx drive compatible with common power tools (drill/drivers).

Q: What's the difference between half-thread and full-thread screws?

A: Half-thread (wood screws) have a longer shank for better holding power in wood; full-thread (machine screws) are for uniform material penetration in plastic/metal.

Q: Can these screws be used in pressure-treated wood?

A: Yes, A2-70 stainless steel resists copper-based preservatives in pressure-treated lumber (ACQ, CA-B).

Q: What is the recommended drill bit size for pre-drilling?

A: Use 80% of the screw diameter for wood (e.g., 3.2mm for M4), detailed in the included installation guide.