Specializing in the production of special precision screws and nuts of various standards such as Chinese standard GB, Japanese standard JIS, British BS, American ANSI and ISO.
At present, the smallest screw diameter that our company can produce is 0.4mm, the shortest is 0.4mm, and the longest is 300CM.
Name Specification: Pan Head Self Drilling Screws
Reference standard: JIS/ANSI/DIN/BSI
Surface Treatment: DEGREASE
Salt spray time: 48 hours / HIGH SALT SPRAY: 48H
Product Specifications: M3.5*L20
Nominal length: L20mm±0.8
Nominal diameter: 3.5mm±0.1
Origin: CHINA
Material: SUS STAINLESS STEEL
Pan Head Self Drilling Screws are highly efficient fasteners with self-drilling function, widely used in fixing and connecting various materials. They have a dome-shaped head design (pan head), which is very suitable for occasions that require beautiful surface and strong connection. Unlike traditional screws, pan head self-drilling screws have the ability to drill holes directly on materials such as metal, plastic or wood and self-tap threads, simplifying the installation process.
Pan Head Self-Drilling Screws: Key Features and Technical Specifications
1. Self-Drilling Design with Optimized Drill Point
Pan head self-drilling screws feature a built-in drill point with a 90°-118° tip angle, eliminating the need for pre-drilling. The drill point typically measures 2-5mm in length (varies by screw size), enabling penetration into mild steel up to 2.5mm thick (ASTM A653 standards). The flute design enhances chip removal during installation.
2. Pan Head with Wide Bearing Surface
The signature pan head provides a 120°-130° head angle with a diameter 1.8-2.2 times the shank diameter (e.g., #8 screw: 8.5mm head diameter). This design distributes clamping force over 40-60% more surface area compared to flat heads, reducing material deformation in substrates like 0.5-3mm aluminum or 16-22 gauge steel.
3. High-Performance Thread Geometry
Featuring modified Type AB or Type B threads with 14-20 TPI (threads per inch), these screws achieve 25-35% higher pull-out resistance than standard threads. The thread rolling process creates 20-30% greater tensile strength (typically 60,000-80,000 PSI for carbon steel grades).
4. Corrosion-Resistant Coatings
Available with zinc plating (5-8μm thickness, 96+ hours salt spray resistance) or premium coatings like Geomet® (15-20μm, 500+ hours salt spray). Optional PTFE coatings reduce driving torque by 15-25% while maintaining 200+ hours corrosion resistance.
5. Optimized Drive Systems
Most models feature #2 or #3 Phillips drives (JIS B 1012 standard) with 30-40% greater cam-out resistance than conventional drives. High-torque versions incorporate TORX® T15-T25 drives, supporting 50-70 N·m installation torque for hardened steel variants (Grade 8.8 or higher).
6. Material Compatibility
Engineered for multiple substrates: carbon steel (HRC 22-32), stainless steel (304/410 grades), and aluminum alloys (6061-T6). The heat-treated shanks (Rockwell C 28-35) maintain structural integrity when drilling through 12-14 gauge steel framing.
Advantages:
Simplified installation: Since the screw has a self-drilling function, there is no need to pre-drill holes during installation, which reduces the operation steps and improves work efficiency.
High strength and corrosion resistance: The use of stainless steel material, SUS Stainless Steel, provides excellent strength and corrosion resistance, which is very suitable for applications exposed to humid or corrosive environments for a long time.
Enhanced stability: The Pan Head design can increase the contact area of the screw, reduce damage caused by excessive pressure, and ensure the stability of the connection.
Wide applicability: Due to its design and material advantages, the pan head self-drilling screw is widely used in many industries, including construction, electronics, automobiles and home appliances.
Scope of use:
Construction industry: Widely used in steel structures, metal frames, wooden structures and other connections, Pan Head Self Drilling Screws can quickly and firmly connect metal plates, wooden boards and other components.
Automobile manufacturing: In the process of automobile assembly, this type of self-drilling screws are used to fix metal parts, such as body connection, equipment installation, etc., with high durability and corrosion resistance.
Electronic product assembly: In the assembly of electronic equipment, screws can ensure the fastening of parts, especially for applications requiring high corrosion resistance and precision.
Home appliance industry: In the assembly process of home appliances, the use of pan head self-drilling screws can ensure the firmness and long-term stability of the connection parts, and is suitable for use in humid environments.
Outdoor equipment: Such as sports equipment, outdoor tools, etc., these equipment need to maintain a stable connection when exposed to harsh environments, and this type of self-drilling screws are suitable.
FAQ
Does it need to be drilled in advance?
No. Pan Head Self Drilling Screws have a self-drilling function, which can directly drill holes on the workpiece and perform self-tapping threads, which is very convenient and fast.
Is the screw head easy to be damaged or loose?
Due to the Pan Head design, the screw has a larger contact surface with the material, which reduces pressure concentration, reduces the possibility of damage or loosening of the screw head, and enhances the stability of the connection.
Is the material of the screw corrosion-resistant?
Yes, the screw is made of SUS Stainless Steel, which has very high corrosion resistance and is particularly suitable for fixing work in humid or corrosive environments.
Are the screws suitable for all types of materials?
Pan Head Self Drilling Screws are mainly suitable for common materials such as metal, wood, and plastic. When processing harder metals or special materials, you may need to choose stronger screws or suitable tools.
How to ensure the service life of the screws?
Keep the screw surface clean, avoid long-term exposure to extreme environments, and use the correct installation tools and torque to prevent damage to the screw head. DEGREASE helps clean the surface and increase coating adhesion, thereby extending the service life of the screw.
Pan Head Self Drilling Screws are efficient self-drilling screws designed to simplify the installation of materials such as metal, plastic and wood. Its stainless steel material provides good corrosion resistance, and the Pan Head design enhances stability. It is widely used in the construction, automotive, electronics, home appliances and other industries. The self-drilling function of the screw eliminates the need for pre-drilling, making installation easy and quick, greatly improving work efficiency. Whether it is high-strength fixing or use in harsh environments, this self-drilling screw can provide a strong and durable connection solution.
1. We have more than 20 years of experience in exporting to many countries for example America.Japan.Korea.Germany.France.England etc. In fact, we have 20 years of production experience. When the drawings are confirmed, we will provide customers with professional information to make product assembly smoother.
2. Our company have ISO9000.
3. We can give Proposing Solutions and help our customer to solve any fastner system problem.
4.We can reply you price within 2 hours.
5. We can produce samples for you in 5-7 days.
6. We can give you drawings within 2 hours.
7. Working with us can save your time and money.
8.We can confirm 100% quality in diameter and tolerance.
9.More than 90% are returned customers.
10.We not only produce and sell products ,we also can offer you help in China as friend .
11.I would like to help you to reach your dream in my ability ,give me chance is giving yourself chance.
Our logistics information exchange :
Are you factory ?
We are factory.We not only produce customized hardware we also produce test machine to check quality ourselves.This is our big advantage.
How long is your delivery time?
It is according to the product you need and quantity ,usually in 30 days
Can you provide samples ?
Yes, we can supply samples if we have stock.But if its customized , you need pay us mould fee, sample cost.
What drawings format do you need for production?
2D:PDF, CAD, JPG etc.3D: STP,IGS, STL, SAT,PRT,PT etc.
Can you produce according to the samples?
Yes,we can produce accordingto your samples
What can we do if you have any problem on your production line?
If you have any fastners problem on your production line,we will give you solutions quickly.
Dongguan Qisheng Metal Technology Co., Ltd. is a professional manufacturer of screws and nuts and other fastener products integrating R&D, production, processing and sales. The company is located in the famous manufacturing city in China-Dongguan City, Guangdong Province. The company covers an area of 3,000 square meters.
Specializing in the production of special precision screws and nuts of various standards such as Chinese standard GB, Japanese standard JIS, British BS, American ANSI and ISO. Our equipment is advanced. At present, the smallest screw diameter that our company can produce is 0.4mm, the shortest is 0.4mm, and the longest is 300CM. The materials used are stainless steel SUS304 /SUS410/SUS 430 /SUS620, etc., red copper H95, brass C2700, aluminum 6061, titanium TI 04, etc.
Our products can meet the environmental testing standards of the European Union-ROHS, the United States–California 65 standard, Japan-SONY00259 etc., and even more stringent testing standards. At present, our salt spray test standard can reach up to 2000 hours, and the surface hardness can reach up to HV2000.
Our business policy is to serve every customer with the highest quality and fastest speed.
Please feel free to contact us if necessary.
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