Descriptions

Plastic expansion screws, also known as plastic expansion anchors, are versatile fastening solutions designed for securing light to medium-weight objects to brittle substrates such as concrete, brick, stone, plasterboard, and hollow walls. Composed of a durable plastic sleeve (anchor body) and a matching metal screw (carbon steel or stainless steel), they rely on an expansion mechanism to create stable, vibration-resistant fixing—making them essential for construction, interior decoration, furniture installation, and industrial assembly worldwide.

Core Design & Working Principle

• Drill a pilot hole in the substrate matching the anchor’s diameter.
• Insert the plastic sleeve into the hole.
• Drive the metal screw through the sleeve—this forces the plastic body to expand radially, pressing tightly against the hole wall.
• The expanded plastic creates friction and mechanical interlock, preventing the anchor from slipping or pulling out, even under repeated stress.

Key Advantages & Structural Features

1. Superior Material Durability
   
   
   The plastic sleeve is typically made of high-quality nylon (PA6/PA66), polypropylene (PP), or polyethylene (PE)—materials chosen for their excellent impact resistance, corrosion resistance, and temperature stability (-40°C to 80°C). They resist moisture, chemicals, and UV radiation, making them suitable for both indoor and outdoor applications.
2. Substrate Protection
   
   
   Unlike metal anchors, the plastic sleeve minimizes damage to brittle substrates (e.g., plasterboard, hollow bricks) by distributing pressure evenly during expansion. This avoids cracking or crumbling, ensuring the integrity of the base material.
3. Easy Installation & Versatility
   
   
   No specialized tools are required—installation can be completed with a drill and screwdriver. The anchors are compatible with various substrates (solid, hollow, or porous) and work with standard screws (cross-recessed, slotted, or hexagon drive).
4. Cost-Effective & Reliable Holding Power
   
   
   Lightweight and low-cost, plastic expansion screws offer excellent value for mass applications (e.g., office partitions, retail displays). Their expansion design provides consistent pull-out resistance, supporting loads from 1kg to 50kg (depending on size and substrate).

Typical Applications

• Home & Office: Installing shelves, curtain rods, towel racks, picture frames, and light fixtures.
• Construction & Decoration: Fixing electrical switch panels, cable trays, ceiling tiles, and partition walls.
• Industrial & Commercial: Securing light-duty equipment, display stands, signage, and exhibition booths.
• DIY Projects: Assembling furniture, garden tools, and household accessories.

Quality Assurance

Why Choose Our Plastic Expansion Screws?

• Broad Compatibility: Suitable for multiple substrates and mounting scenarios.
• Easy Operation: No professional skills required, reducing installation time and labor costs.
• Long-Lasting Performance: High-quality materials resist wear, aging, and corrosion.
• Cost-Effective: Factory-direct pricing with flexible packaging options for wholesalers and retailers.