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The Hex Washer Head Self Drilling Screw is a type of screw that features a hexagonal head with an integrated washer, designed for self-drilling without the need for pre-drilled holes. The head typically includes a built-in washer that helps distribute pressure and improve the contact area, ensuring a firm hold and enhanced sealing. The tip of the screw is designed like a drill bit, allowing it to create its own hole as it is driven into materials.
Product Applications:
Hex Washer Head Self Drilling Screws are commonly used across various industries, particularly where there is a need to fasten materials such as metal, wood, or composite materials without pre-drilling. Common applications include:
- Construction Industry: Used for fastening metal sheets, roofing, and wall systems, especially where rapid installation and secure fastening are crucial.
- Automotive Industry: Used in vehicle assembly, particularly for fixing metal components or body parts.
- Mechanical and Equipment Manufacturing: These screws are often used in machinery and equipment assembly, where vibration resistance and durability are necessary.
- Electrical Industry: Frequently used in electrical enclosures and device mounting, securing components to metal backplates or casings.
Internal Performance:
The internal performance of Hex Washer Head Self Drilling Screws is characterized by their drilling capacity, fastening strength, and corrosion resistance.
- Drilling Capacity: The drill bit tip is made from high-strength steel, capable of drilling into harder materials with ease. This reduces the load on electric tools and speeds up installation time.
- Fastening Strength: The hex washer head design provides a larger contact area, which enables the screw to hold the material more securely, offering higher torque and improved fastening strength.
- Vibration Resistance: The washer helps in distributing load, reducing the impact of vibrations, and preventing loosening over time, which is especially important in applications subject to constant movement or vibration.
Option of Surface Treatments:
To enhance durability, corrosion resistance, and aesthetic appearance, Hex Washer Head Self Drilling Screws are often subjected to various surface treatments. Common surface treatments include:
- Zinc Plating: Electroplated or hot-dip galvanized coating provides a layer of corrosion resistance, especially for outdoor and exposed applications.
- Black Oxide Coating: This treatment enhances corrosion resistance and provides a black finish, often used in industries that require high wear resistance, such as in machinery and automotive applications.
- Passivation: Typically applied to stainless steel or other corrosion-resistant alloys, passivation enhances resistance to oxidation and corrosion, extending the lifespan of the screw.
- Polyester Coating: A coating often used in harsh environments (e.g., high humidity or chemical exposure) to further improve protection against corrosion
| Size | Length | Length | Drilling Point | Drill Capacity |
| #8-18 M4.2 | 1/2" | 13 | 2# | 1.0-2.0 |
| 5/8" | 16 | 3# | 1.0-2.0 | |
| 3/4" | 19 | 3# | 1.0-2.0 | |
| 1" | 25 | 3# | 1.0-2.0 | |
| 1-1/4" | 32 | 3# | 1.0-2.0 | |
| 1-1/2" | 38 | 3# | 1.0-2.0 | |
| #10-16 M4.8 | 1/2" | 13 | 2# | 1.0-3.0 |
| 5/8" | 16 | 3# | 1.0-3.0 | |
| 3/4" | 19 | 3# | 1.0-3.0 | |
| 1" | 25 | 3# | 1.0-3.0 | |
| 1-1/4" | 32 | 3# | 1.0-3.0 | |
| 1-1/2" | 38 | 3# | 1.0-3.0 | |
| 2" | 50 | 3# | 1.0-3.0 |
| Mechanical Properties | |
| Core Hardness | HV240-HV450 |
| Surface Hardness | HV560-HV750 |
| Thread Pitch | Optimized for secure engagement with different materials. |
| Thread Angle | 30°-45° |
Our factory, located in China, is a global leader in self-drilling screw manufacturing, covering a total area of 400,000 square meters and an annual production capacity of 80,000 tons. As a fully integrated manufacturing facility, we handle every step of production, including wire processing, spheroidizing annealing, cold heading, tail forming, threading, heat treatment, galvanizing, and packaging-all under one roof.
Our production process is fully automated, ensuring efficiency and precision at every stage. We strictly adhere to international quality standards, and all of our equipment is imported from Germany and Japan, ensuring the highest level of technological advancement and operational efficiency.
We produce to international's rigorous standards, maintaining strict quality control throughout every process to ensure the consistency and reliability of our products. With advanced equipment, intelligent production, and strict quality assurance, our factory is committed to providing high-quality, efficient manufacturing services to meet the diverse demands of global market
With such an extensive array of testing equipment, our quality control department rivals that of third-party testing agencies, ensuring that all products meet the highest international standards before reaching our customers.
- Coating Thickness Tester: Used for measuring coating thickness and analyzing product composition.
- Drilling Tester: Designed to test the drilling speed of products.
- Tensile Tester: Utilized for testing the tensile strength of wires.
- HL-VMS Vision Measuring System: Provides precise measurements and visual inspections of products from all angles.
- So on
