Aluminum Cup-head Tapping Screw

Aluminum cup-head self-tapping screws are fasteners that combine the features of self-tapping screws and cup-head screws. Their head is shaped like a cup.

I. Features

1. Lightweight and High-Strength: Typically made of 6061-T6 aluminum alloy (7075 aviation aluminum is optional), which with a tensile strength of ≥310 MPa. They are over 60% lighter than steel screws. Compared to traditional steel, their lighter weight while maintaining excellent strength gives aluminum self-tapping screws a significant advantage in weight-sensitive applications such as aerospace and automotive.

2. Cup-Hexagon Socket Design
High Torque Capacity: The hexagon socket can withstand greater tightening forces (up to 5 N·m for M5 screws).

3. Self-drilling design, no pre-drilling required.
Sharp threads + guide tip: Directly tap into aluminum plates (≤4mm), plastic, or thin steel plates (≤2mm), increasing installation efficiency by 50%. Triangular or double-start thread designs offer excellent back-off resistance and maintain tightness even in vibrating environments.

4. Excellent electrical and thermal conductivity: Aluminum has excellent electrical and thermal conductivity, making it suitable for applications requiring heat dissipation or electrical conductivity.

5. Corrosion resistance: Anodized (available in natural, black, or colored colors), rust-free after a salt spray test of over 24 hours.

II. Applications

1. Electronics: Due to aluminum's electrical conductivity and lightweight properties, aluminum self-drilling screws are widely used in electronic products such as computers and mobile phones for internal fastening.

2. Transportation: Aluminum self-drilling screws are favored in the manufacture of vehicles such as automobiles and aircraft for their lightweight and corrosion resistance.

3. Outdoor Facilities: Aluminum self-drilling screws provide excellent weather resistance and stability for exposed structures or equipment.

Why choose our products?
1. We can provide a material report (SGS/MSDS) to ensure the components meet the standards.
2. Full process salt spray test + torque test to eliminate thread slippage or rust defects.
3. Supports non-standard dimensions, surface polishing, laser engraving, and other requirements.