Durable Self Driling Screw Zinc Plating Screw for Indoor and Outdoor Applications

• Customization: Available
• Material: Stainless Steel
• Shape of Head: Hexagon
• Surface Finishing: Zinc Plated
• Certification: ISO, CE
• Customized: Customized
• Core Hardness: Hv240-Hv450
• Surface Hardness: Hv560-Hv750
• Thread Angle: 30°-45°
• MOQ: 2 Ton
• Transport Package: Box
• Trademark: SOLIDEX
• Origin: China
• HS Code: 731814
• Production Capacity: 800 Tons Per Month

Product Description

Product Description

The Hex Head Large Flange Self-Drilling Screw with EPDM Washer is a high-strength fastening solution specifically designed for metal-to-metal and metal-to-wood applications. Its large flange provides enhanced load distribution, while the EPDM bonded washer ensures a watertight seal, making it ideal for roofing, cladding, and steel structure projects

Product Features:

1.Hex Head with Large Flange
Provides a secure grip and easy installation with power tools.
Distributes pressure over a larger surface area, reducing material damage.
2.Self-Drilling Tip
Allows direct penetration into metal without pre-drilling, improving work efficiency.
Designed for fast and precise drilling through steel, aluminum, and wood.
3.EPDM Bonded Washer
Ensures a waterproof and dustproof seal, preventing leaks in roofing applications.
Resistant to UV rays, extreme temperatures, and chemical corrosion.
4.Full or Partial Thread Options
Full Thread: Provides maximum grip strength and resistance to loosening.
Partial Thread: Allows for better clamping force in structural applications.

Applications:

1.Metal Roofing & Cladding: Securely fastens metal sheets and prevents water leakage.
2.Steel Structure Construction: Provides strong connections for industrial and commercial buildings.
3.Solar Panel Mounting: Ensures a firm hold for photovoltaic systems in outdoor environments.
4.General Outdoor & Industrial Use: Suitable for projects requiring weather-resistant fasteners

   

Mechanical Properties
Core Hardness	HV240-HV450
Surface Hardness	HV560-HV750
Thread Pitch	Optimized for secure engagement with different materials.
Thread Angle	30°-45°

 

Surface Treatment Options:

To enhance durability and corrosion resistance, the following surface coatings are available:
Zinc Plating (White, Blue-White, Yellow, Black Zinc): Protects against rust in standard environments.
Ruspert Coating: Offers high corrosion resistance for outdoor and industrial applications.

Main Products

Our main products include Screw, Self Drilling Screw, Self Tapping Screw, Roofing Screw, Bi-Metal Screw, Hex Flange/Washer Screw, Nylon Hex Washer Head, Painted System, Wood Screw, Stainless Steel Screw.

Production Process

Company Profile

Shenzhen Dahe Industry Co., Ltd., established in 2003, is one of China's leading manufacturers of Self-Drilling Screws. Located in Yongnian District, Handan City, Hebei Province, our factory covers an area of 400,000 square meters and employs over 1,000 staff. Equipped with seven laboratories and a professional quality control team of more than 150 members, we are dedicated to providing high-quality, innovative, and cost-effective solutions for customers worldwide.
As the first company in China to fully automate the production of self-drilling screws, we maintain full control over every production stage, from raw material sourcing to manufacturing, heat treatment, and surface finishing, ensuring premium product quality. With an annual production capacity exceeding 80,000 tons, we handle large orders and customized products across industries like construction, automotive, and photovoltaics. Our products are widely praised by global customers.

Exhibition Photos

Our Partners and Customers

Certifications

Dahe holds multiple international certifications, including ISO9001 and CE, and adheres to global standards such as DIN, AS, and ASE to ensure the reliability and stability of our products in the international market.

Packaging & Shipping