Product Description

Product Introduction: Hexagonal Head Washered Bi-Metal Self-Drilling Screws
Engineered for high-efficiency fastening in demanding industrial and construction scenarios, these hexagonal head washered bi-metal self-drilling screws (branded under "MALAXY") represent a versatile solution that combines robust performance, convenience, and durability. As a flagship product in the MALAXY lineup (marked as a "Popular Brand Pick"), this fastener is designed to eliminate the need for pre-drilling or separate washers, streamlining installation while ensuring reliable, long-lasting connections.
Core Structural & Material Advantages
The screw features a bi-metal construction that optimizes both cost and functionality:
- The drilling tip and partial thread section are forged from high-hardness HSS (high-speed steel), enabling effortless penetration into thick metal sheets (up to 2mm cold-rolled steel), wood, and composite materials-even in high-torque applications.
- The main shank, hexagonal head, and integrated washer are crafted from high-quality carbon steel, then finished with a hot-dip galvanized coating (the silver-gray appearance) that delivers superior corrosion resistance, making the screw suitable for outdoor, humid, or lightly corrosive environments (e.g., roofing, steel structure framing, or outdoor equipment assembly).








| Specification |
| Product Name |
MALAXY Bi-Metal Bi-Metallic Self-Drilling Roofing Screws |
| Brand |
MALAXY/CUSTOMIZED |
| MOQ |
1 Pcs |
| Sample |
Freely Supplied |
| Material |
Steel/Stainless Steel/Titanium/Brass/Aluminium/Plastic/Nickel |
| Finish |
Plain/Zinc(Clear,Blue,Yellow,Black)/Mechanical/Dacromet/GEOMET/Plain |
| Certificate |
ISO9001/ISO14001/TS15949 |
| Delivery time |
15-25Days |
| Application |
Industry |
| Packing |
Plastic Bags + Cartons + Pallet/Customized |
Certifications
Company Profile
--Shanghai Malaxy Industry Co., Ltd.--
Malaxy's partners all win!
ASIA'S LEADING FASTENER MANUFACTURER
Since our first fastener factory (Zhejiang Malaxy Hardware Factory) was established in 2001, we set up the export branch office (Shanghai Malaxy Industry Co., Ltd.) in 2006. MALAXY is a leading manufacturer in the fastener industry and mechanical equipment industry, with perfect product structure. MALAXY has long been committed to the R & D, production and sales of bolts, nuts, screws, washers and jacks, realizing business and technological innovation. At the same time, we listen to our partners' needs around the world. MALAXY is qualified with TS 16949, ISO 9001, and ISO 14001. MALAXY products are exported to more than 70 countries such as USA, Germany, Peru and other countries, achieving sustained high-quality growth, and striving to become a world-class manufacturer in the industry.
Factory
Address: No. 1, Zhejiang Kaiji Science and Technology Industrial Park, Jiaxing City, Zhejiang Province 314305
Today, MALAXY has become an international brand. With exceptional service and technology, we provide comprehensive fasteners and a wide range of hardware solutions. Our products are used in various industries, including construction, automotive, and electronics. We pride ourselves on our ability to deliver high-quality products that meet the specific needs of our clients. At MALAXY, we believe in continuous innovation and improvement, which is why we invest heavily in research and development. Our team of experts is constantly working on new designs and materials to ensure that our products remain at the forefront of the industry. We also offer customized solutions to our clients, as we understand that every project has unique requirements. With MALAXY, you can be confident that you are getting the best possible hardware solutions for your needs. Contact us today to learn more about our products and services.
Export Branch Office
Address:23-A,No.16 Boyang Road. Yangpu District, Shanghai 200090
Quality Management
-- Key to customer satisfaction --
We will strive to provide premium quality of fastening and hardware solutions to our customers worldwide. We respect every particular need from different markets and countries by establishing a full range of product and service to earn mutually beneficial and long-term partnership.
FAQ
Question: How about the quality of MALAXY products? Because I need good quality products to complete my work!
Answer: 100% inspection during production. MALAXY products are certified to ISO9001, TS16949 international quality standards.
Question: What's your packing?
Answer: Our regular packing is 25 kg/carton and 900 kg/pallet. We can also provide customized packaging, if you need, just tell our customer service, then we will take care of everything!
Question: May I have some samples from MALAXY? How much is the sample fee?
Answer: We provide FREE SAMPLES for our customers, you just need to pay for the express fee. If you need customized products, there will be a charge for the customized samples, but the samples charge will be deducted from the official order.
Question: What's your MOQ?
Answer: Generally, we can provide the goods based on your requirements because we will store some stock in our warehouse. Every kinds of products have their own MOQ, maybe 10 pcs, maybe 1000 pcs, it depends on the total weight of the goods you need.
Question: What's your delivery time?
Answer: Normally, our lead time is 2-5 days after we received your deposit if we have stock in our warehouse. Or our lead time is 12-25 days, it also depends on your order quantity.