50mm Wafer Head Self Drilling Screws Factory

Product Overview
Wafer Head Self-Drilling Screws are engineered to provide efficient, high-quality fastening for sheet metal and light-gauge steel applications. The integrated design combines drilling, tapping, and fastening into a single operation, eliminating the requirement for pre-drilled pilot holes and significantly reducing installation time and labor. Manufactured from heat-treated carbon steel with advanced protective coatings, these screws ensure durability and long-term performance. The low-profile wafer head delivers a secure, near-flush finish, making it an ideal choice for applications where aesthetics and structural integrity are both essential.

Technical Specifications

Material and Finish

• Base Material: Quenched and tempered medium/high carbon steel, Grade 1022A or equivalent.

• Standard Coating: Electro-zinc plating, compliant with ASTM B633.

• Enhanced Coating Options: Hot-dip galvanized or proprietary Geomet® coatings available for severe environmental exposure, offering protection exceeding 500 hours in salt spray testing per ASTM B117.

Design Parameters

• Head Style: Low-profile wafer head with an integral load-distributing flange.

• Drive Type: Phillips #3, Pozidriv #3, or Square Drive #3. Torx drive (T-25/T-30) is optionally available for superior torque application and reduced tool slippage.

• Drill Point: Available in three standard configurations:

• #2 Point: For penetration up to 14-gauge steel.

• #3 Point: For penetration up to 10-gauge steel.

• #4 Point: For penetration up to 3/16-inch mild steel.

• Thread Type: Fine thread or Hi-Lo thread options.

• Shank: Fully threaded design.

Standard Sizing and Compliance

• Common Diameters: #8, #10, 1/4 inch (Metric equivalents: M4, M5, M6).

• Common Lengths: Range from 3/8 inch (10 mm) to 2 inches (50 mm). Custom dimensions can be supplied.

• Compliance: Manufactured to meet ANSI, SAE, and ISO specifications for dimensional and mechanical performance.

Key Features and Benefits

Integrated Fastening Solution
The hardened self-drilling point creates its own pilot hole and forms mating threads in one action, streamlining the assembly process and reducing total project time and cost.

Aesthetic and Functional Design
The wafer head provides a wide bearing surface to prevent pull-through in thin materials while maintaining a near-flush profile. This ensures a clean appearance and reduces potential snag points in finished applications.

Engineered for Durability
A scalable selection of finishes allows for precise matching to environmental conditions, from general indoor use to highly corrosive outdoor or industrial atmospheres, ensuring long-term reliability.

Versatile Application Range
Suitable for a wide array of material combinations, including metal-to-metal fastening and hybrid assemblies such as attaching wood, plastics, or composite panels to metal substrates.

Typical Applications

• Architectural cladding, fascia, soffit, and trim attachment to steel framing.

• Fabrication and assembly of HVAC ductwork and sheet metal enclosures.

• Construction of appliances, electrical cabinets, and metal furniture.

• Light-gauge steel framing for interior partitions and non-structural components.

• Assembly of interior and exterior components in transportation equipment and trailers.

Selection and Ordering Guidance
For optimal results, select the appropriate drill point based on the thickness and type of base metal. Choose the coating specification according to the environmental requirements of the application. Our technical support team is available to assist with product selection and specification review.

Quality Assurance
All products are manufactured under a strict quality management system to ensure consistent performance, dimensional accuracy, and coating integrity. We are committed to providing reliable fastening solutions supported by comprehensive technical data and professional service.