Phillips csk head concrete Screws

Main Features:

1.Hi-Low Thread Structure: High threads cut concrete/masonry fibers, low threads form locking engagement, reducing driving resistance and improving anchoring strength with lower installation torque

2.90° Countersunk Head: Sinks flush with the workpiece surface after installation for a smooth, unobtrusive finish, ideal for ceiling and wall applications requiring high flatness

3.Universal Phillips Drive: Compatible with standard screwdrivers and power tools, no special bits required for universal use and low installation threshold

4.Direct Fastening Without Expansion Anchors: Drives directly into concrete, solid brick, and lime sand brick without expansion anchors, eliminating extra steps for significantly improved construction efficiency

5.High-Strength Material & Heat Treatment: Premium carbon steel with quenched and tempered heat treatment, high hardness and toughness, tensile strength ≥ Grade 8.8, resistant to breakage and deformation

6.Multiple Surface Treatments: Zinc plating, colored zinc, Dacromet, and other processes available to meet rust, weather, and corrosion resistance needs for indoor, outdoor, and coastal environments

7.Full Hi-Low Thread Shank: Continuous threads for deep engagement with concrete, offering excellent pull-out and torsion resistance for heavy-load applications

8.Multi-Substrate Compatibility: Directly suitable for concrete, solid brick, lime sand brick, and stone, also compatible with wood and metal parts for strong versatility

Common Applications:

1.Building Decoration Engineering: Fixing light steel keels, drywall, ceilings, and partitions to concrete substrates

2.Piping & HVAC Systems: Installing fire protection, water supply, and air conditioning duct supports to concrete walls/floors

3.Equipment Installation: Securing small equipment, electrical enclosures, distribution boxes, and surveillance brackets to concrete

4.Curtain Wall & Exterior Wall Projects: Connecting exterior wall panels, insulation boards, and keels to concrete structures

5.Outdoor & Anti-Corrosion Projects: Fixing outdoor facilities, canopies, sheds, and railings to concrete foundations, suitable for humid and outdoor environments

6.Renovation & Retrofit Projects: Old house renovation, retrofits, and secondary fixing to concrete walls/floors

7.Other Hard Substrate Scenarios: Connecting wood, metal parts, and supports to solid brick, lime sand brick, and stone