Technical Usage
These concrete screws are commonly used in construction, electrical installations, and carpentry projects requiring a robust fastening solution into concrete, brick, or block. They are frequently employed to anchor metal frameworks, shelving units, conduit brackets, and various structural elements to masonry surfaces. Their galvanized finish makes them suitable for exterior use where exposure to moisture and weathering is expected.
Technical Specs
| Specification | Details |
|---|---|
| Material | Galvanized Iron |
| Grade | 4.8 |
| Corrosion Resistance | High, due to galvanized coating |
| Thread Type | Self-tapping, concrete-specific |
| Drive Type | Hex or Torx |
| Length Range | 40mm to 150mm |
| Diameter Range | 6mm to 12mm |
| Load Capacity | Depends on diameter and length |
| Surface Finish | Zinc-plated (galvanized) |
Types of Item
- Standard Hex Drive: General-purpose, used for a variety of concrete anchoring needs.
- Torx Drive Head: Enhanced grip and reduced cam-out for more demanding applications.
- Flat Head Design: Suitable for flush installations where surface clearance is necessary.
- Pan Head Design: For applications requiring extra holding power on the material surface.
History
Concrete screws were developed in the 1970s to improve fastening technology for masonry materials, which previously relied heavily on expansion anchors and adhesive solutions. The invention of self-tapping concrete screws allowed for more efficient and secure installations. Over time, advancements in galvanization techniques enhanced the screws’ durability, especially for outdoor and harsh conditions. The Grade 4.8 specification denotes a medium tensile strength level, making it ideal for applications requiring a balance of load-bearing capability and cost-effectiveness.
