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Product Introduction
Hex Head Self Drilling Screws with Color Painted Head
Color painted hex flange head self drilling screw with EPDM provides large bearing surface, which protect the connecting surface during assembly. S-metal offers hex flange head drilling screw with EPDM washer(roofing screw), in which the EPDM washer offers sealing functions,to resistant water leaks during its working.Hex washer head self drilling screw is for metal to metal applications, mostly for roofing to metal frames fastening. Various color painting for outdoor decoration applications.
Product Advantage
Waterproof Seal:
The bonded EPDM (ethylene propylene diene monomer) washer creates an airtight and watertight seal between the screw head and the attached surface, preventing leaks and corrosion.
Corrosion Resistance:
High-quality zinc-plated steel or 410 stainless steel provides excellent resistance to rust and corrosion, making the screws ideal for outdoor use, especially in wet environments.
Efficient Installation:
The self-drilling point eliminates the need for pre-drilling or tapping, saving time and effort. The screw drills its own hole and creates the threads simultaneously.
Secure Grip and Versatility:
The hex washer head allows for a secure grip with a wrench or nut driver, reducing the risk of stripping and enabling use in spaces where a screwdriver might not fit.
Durability and Strength:
Made from high-quality steel, these screws offer excellent tensile strength and are built to last, providing a long-lasting fastening solution.
Leak-Resistant Sealing:
The integrated EPDM washer under the flange seals the hole, preventing loosening and protecting the mating surface from damage.
| Finish | Color Painted |
| Material | High Strength Steel, Stainless Steel,Carbon Steel,Iron, Aluminum Steel |
| Measurement system | Inch, Metric |
| Place of Origin | Ningbo,China |
| Brand Name | Donghuang |
| Standard | DIN, ISO, GB |
| Size | ST3.5-ST6.3, etc,according to customer needs |
Diameter | 8#(4.2mm),10#(4.8mm),12#(5.5mm),14#(6.3mm) |
| Length | Offered in various lengths (e.g., 1 inch, 1.5 inches, 2 inches, up to 3 inches) |
| Tip Type | Self-drilling point |
| Head Type | hex flange head |
| Key Words | Self Drilling Screws, Roofing Screws, Tek Screws |
| Packing | Small box packing/bag or carton packing/as customers' request |
Product Uses
Metal Roofing and Siding:
Attaching metal panels to wooden or metal structures, ensuring a secure and waterproof connection.
Outdoor Structures:
Fastening materials for sheds, barns, agricultural buildings, and other outdoor structures exposed to the elements.
Cladding Installations:
Used for exterior cladding to prevent water damage and maintain structural integrity.
Product Operate Guide
1. Choose the Right Screw
Material:
Select a screw suitable for the material you are joining, such as steel for metal or wood-to-metal applications.
Screw Point Length:
The self-drilling point must be long enough to penetrate both materials before the threads begin to engage.
EPDM Washer:
This bonded rubber washer is crucial for creating a watertight seal and preventing leaks and damage to the mating surface.
2. Prepare for Installation
Tool:
Use a power driver, such as a drill or torque wrench, equipped with a hex drive bit.
Pressure:
Be prepared to apply firm downward pressure to help the screw's drill point engage the material and begin drilling.
3. Installation Process
Position the Screw:
Place the pointed tip of the self-drilling screw at the desired location.
Engage and Drive:
Power the driver at a low speed initially and bear down with consistent force. The screw will drill its own hole and form its own threads as it is driven into the material.
Monitor for Stripping:
Watch to ensure the screw's threads are not stripping out, which could occur if insufficient pressure is applied.
Sealing:
As the screw is driven, the bonded EPDM washer will compress to create a secure, waterproof seal.
4. Key Benefits
No Pre-Drilling:
The primary advantage is the elimination of the need for pre-drilling, which saves time and effort.
Watertight Seal:
The EPDM washer provides a reliable seal for metal roof and wall panel installations.
Secure Fastening:
The combination of a hex head, self-drilling point, and EPDM washer ensures a strong and stable connection.
FAQ
Q: Are Self-Drilling Screw and Tek Screws the Same?
A: Yes, Self-Drilling Screws and Tek Screws are terms often used interchangeably.
Q: How Do Self-Drilling Screws Differ from Self-Tapping Screws?
A: Self-drilling screws have a drill point that eliminates the need for a pilot hole, whereas self-tapping screws require a pre-drilled hole in hard materials.
Q: How Do I Select the Right Screw Size?
A: Choose screw size based on material thickness and project requirements.
Q: Can Self-Drilling Screw Be Reused?
A: While they can be removed it is not recommended to use Self-Drilling Screw more than once.
Q: Are Self-Drilling Screw Suitable for Outdoor Use?
A: Yes, but opt for corrosion-resistant finishes such as stainless steel or galvanised finishes for long-term durability in outdoor environments.
