Metal Shutter Screws

Metal shutter screws are a specialty construction fastener. Its head adopts a hexagonal washer head design. The diameter of the bearing surface is increased by 15% compared with the ordinary round head. This can evenly distribute the locking force on the surface of the blinds and prevent thin-walled aluminum profiles from deforming due to excessive local pressure. The threaded part is a self-drilling tail end structure. It can easily penetrate sheet metal with a total thickness of 1.5 mm without pre-drilling. The complete installation time of a single screw can be shortened to less than five seconds, greatly improving construction efficiency.

The slot type of the screws is T25 plum blossom slot. Its contact area with the bit is about 20% larger than the traditional cross recess. This can effectively prevent slippage when screwing in at high speed and ensure that each screw can reach the preset locking torque. These precision head and groove designs form a complete fastening solution, allowing metal shutter screws to provide long-lasting and reliable connection performance under various complex working conditions.

Obtain drawings from clients or produce drawings based on their samples or specifications.

The drawings, product raw materials, surface treatment, and other details are attested to by both parties.

Simplify materials management

• Unified packaging labels and specifications prevent improper material mixing, cut down on management personnel investment, and reduce on-site material inventory time by 50%.

 

Improve the beauty of buildings

• The arrangement is tidy and consistent after installation, and the head's high precision and uniform surface improve the building facade's aesthetic appeal and increase the owner's satisfaction.

Extend maintenance intervals

• The first maintenance period is delayed by eight to ten years due to the exceptional weather resistance. The frequency of subsequent operation and maintenance is much lower than that of regular screws, which need to be inspected every three years.

 

Suitable for a variety of substrates

• A single screw can handle 90% of typical blind installation situations, regardless of the material-wood, steel, or aluminum-which lessens the difficulty of altering specifications.

1

Excellent fatigue resistance

 

Because precision tempering removes internal stress, it can withstand dynamic wind loads with exceptional toughness. Less than 10% of the preload force is lost after 100,000 dynamic load cycle tests. This ensures the blinds' long-term safety because the screws won't loosen or break from wear and tear in the face of constant vibrations brought on by typhoons or strong winds.

2

Convenient installation guide

 

The contact area with the bit is roughly 20% greater than that of standard cross grooves, and the depth and angle of the specially created plum blossom groove on the head are optimized. This improves installation accuracy and speed by preventing slippage and bit wear brought on by high-speed rotation during installation. It also enables the screws to be automatically aligned when the electric drill is installed with one hand in the air.

3

Wide adaptability

 

A single screw can cover a range of mounting substrates with a total thickness of 1.5mm to 5.0mm by varying the drill tail's length and the cutting edge's angle. They can be drilled and formed in a single step, whether they are thick steel keels or thin-walled aluminum louvers. This eliminates the hassle of changing screws due to project modifications.

4

Optimized head load capacity

 

The hexagonal washer head can more evenly distribute the clamping force on the blinds' surface because its bearing surface diameter has been precisely calculated and is roughly 15% larger than that of the standard round head. This ensures that the window blades are stable and do not shake by preventing the aluminum alloy shutter blades from deforming due to excessive local pressure during locking and by providing a more stable holding force when withstanding strong wind and negative pressure.

Provide a quote, ensure that the order quantity is accurate,

and include all relevant details, such as the terms of payment, the terms of trade, the type of packaging, etc.

Follow the original drawings and samples exactly when producing the goods.

It was carefully packaged and delivered to the clients following a final inspection.

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