Carbon Steel Black Oxide Countersunk Head Flat Tail Self-Tapping Screws for Chassis & Fan Mounting

Our Carbon Steel Black Oxide Countersunk Head Flat Tail Self-Tapping Screws are professional-grade fasteners engineered for secure mounting and installation, specifically designed for chassis, fans, and electronic hardware. Crafted from high-quality carbon steel with a hair-black oxide finish, these screws offer excellent wear resistance, corrosion protection, and a sleek, low-profile appearance—perfect for applications where a flush, unobtrusive finish is required.

 

Featuring a cross (Phillips) drive, countersunk (flat) head, and flat tail design, these self-tapping screws combine easy installation with reliable performance. The self-tapping thread eliminates the need for pre-drilling, saving time during assembly, while the countersunk head sits perfectly flush with the mounting surface, avoiding protrusions that could interfere with chassis components, fans, or other hardware.

 

Ideal for PC chassis fan mounting, electronic device assembly, hardware installation, and small appliance repair, these black oxide self-tapping screws provide a tight, secure hold on metal, plastic, and thin wood surfaces. The hair-black finish not only enhances durability but also matches the aesthetic of most chassis and electronic hardware, making them a practical and visually consistent choice.

 

Suitable for PC builders, electronics technicians, DIY enthusiasts, and hardware installers, these carbon steel self-tapping screws deliver consistent, reliable performance—ensuring your chassis fans and electronic components stay securely fastened for long-term use.