White plastic expansion anchors are primarily used for fastening objects and are typically paired with self-tapping screws to ensure a secure hold.
Fish-type expansion anchor (often called "Little Yellow Fish" or "Gecko" type): Features a slotted, fish-tail-shaped tail that expands widely upon insertion, providing strong gripping power; suitable for porous wall materials like hollow bricks and drywall, and is the most common type of white expansion anchor.
Standard cylindrical expansion anchor: Cylindrical in shape with a smooth or longitudinally ribbed surface; relies on friction and compression for stability. Commonly used in solid concrete or brick walls; offers good stability, though its pull-out resistance is slightly lower than that of the fish-type anchor.
Square expansion anchor: Features a square cross-section and excellent anti-rotation properties; frequently used in applications where preventing the anchor from spinning within the hole is critical (such as cabinet installation), and typically available in M6/M8 sizes.
Barbed/Multi-barbed reinforced type: Based on the fish-type or cylindrical design but incorporates transverse or spiral barbs; significantly increases grip on the wall material and prevents backing out or rotation, making it suitable for mounting light-to-medium-duty fixtures.
