Cross Flat Head Nylon Self-Tapping Screw 45mm, Fastener for Backer Board and Extruded Polystyrene Board

              Cross Flat Head Nylon Self-Tapping Screw 45mm, Fastener for Backer Board and Extruded Polystyrene Board

 Cross Flat Head Nylon Self-Tapping Screw Introduction 

This cross-recessed countersunk plastic self-tapping screw is a special fastener developed for thermal insulation boards and waterproof backing boards, integrally injection-molded from nylon raw material. Featuring an enlarged spiral blade design, it achieves tight engagement when screwed into foam and extruded boards, avoiding board cracking and thread slipping. Its countersunk cross-recess structure allows the screw head to sink below the board surface after tightening for a flat finish, making it suitable for exterior wall insulation, roof insulation, waterproof backing boards, greenhouse insulation and other projects. The plastic material is non-conductive, rust-free and eliminates metal thermal bridges, complying with energy-saving and thermal insulation construction specifications.

Core Advantages of the Product

• Wide-blade thread, secure locking plate
Enlarge the spiral blade to achieve a larger contact area with foam boards. After being screwed tight, it is less prone to loosening and falling off, and is unlikely to tear the boards during screwing in, effectively preventing board cracking.

• Plastic material, no thermal bridges, energy-saving
Non-metallic fasteners do not create thermal bridges and will not impair the thermal insulation performance of the insulation system, meeting the construction requirements for passive houses and energy-efficient buildings. They are permanently rust-proof and will not cause wall staining from rust marks in later use.

• Cross recessed countersunk head design for a flat surface
Countersunk design,After tightening, the nail head sinks into the board, leaving a flat surface without protrusions, and will not interfere with subsequent plastering and waterproofing construction.

• Easy to install and labor-saving
Sharp-tip self-tapping design can be screwed into panels directly with an electric drill without pre-drilling. A single worker can complete installation quickly, greatly improving the efficiency of thermal insulation construction.

• Acid and alkali resistant, anti-aging with long service life
Nylon raw material, corrosion-resistant and UV-resistant. When embedded in walls or exposed on rooftops, it resists embrittlement and fracture after long-term use.

• Direct supply from factory, customization available
We have our own injection molding workshop. Production can be scheduled for large engineering orders. Custom lengths, colors and styles are available, and mold opening for production is supported.

Installation Steps

1.Select self-tapping screws of the corresponding length, fit a Phillips screwdriver bit onto the electric drill.

2.Align the nail tip with the positioning point on the insulation board / backing board, and screw it in vertically into the board at a constant speed

3.Tighten until the nail head sinks into the board surface and the panel is secure. Do not over-tighten forcefully to avoid cracking the panel.