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: SET SCREW M2*L3
Reference standard: JIS/ANSI/DIN/BSI
Standard number: JIS B1111/ANSI18.6/DIN7981/DIN912
Surface Treatment: BLACK ZINC PALTING
Salt spray time: over 256 hours / HIGH SALT SPRAY: 256H
Product Specifications: M3*PITCH0.5*SHOULDER BODY L12MM*L4MM
Nominal length: L12mm±0.1/ L4MM±0.1
Nominal diameter: 3mm±0.05
Origin: CHINA
Material: LOW CARBON STEEL SWCH18A-22A
Price: RMB 0.05/PCS
The function of Cup Point Grub Screw is to tightly combine with accessories through threads to provide efficient fixing effect. Due to its unique cup-shaped nodal head, it can generate strong friction on the contact surface, thereby effectively preventing the loosening of components.
Material
According to the specifications you provided, the material is low carbon steel (SWCH18A-22A), which is often used to manufacture screws with high strength requirements and do not require extremely high corrosion resistance. Low carbon steel has good machinability, but additional surface treatment may be required in some environments to improve its corrosion resistance.
Surface treatment
The surface of this cup head screw is treated with black zinc plating (BLACK ZINC PLATING). This can improve its corrosion resistance, especially for screws used in general industrial environments. According to the salt spray test results you provided, the corrosion resistance exceeds 256 hours, which is suitable for applications in high salt spray environments.
Head shape and type
The head design is a cup head (Cup Point), which is suitable for fastening to small holes or recessed parts that need to be locked. The cup head shape can generate strong contact force, fix more firmly, and prevent the screw from loosening.
Suitable for applications that require precise control of pressure and locking.
Thread type
The cup head screw uses standard metric threads (such as M3 specifications) and complies with JIS/ANSI/DIN/BSI standards. The specific reference standards are JIS B1111/ANSI18.6/DIN7981/DIN912.
Metric threads are common thread types and are widely used in various types of mechanical equipment with good standardization and compatibility.
Advantages
Strong fixing effect: The cup head design provides a stronger locking effect.
Corrosion resistance: The black zinc coating provides good corrosion resistance and is suitable for use in highly corrosive environments.
High precision: Small dimensional tolerances, suitable for precision assembly.
Standardized production: Complies with multiple international standards and is easy to replace and maintain.
Scope of application
This type of cup head screw is widely used in scenes that require precise installation and fixing, such as machinery manufacturing, electronic equipment, and the automotive industry. It is particularly suitable for power tools, home appliances, automation equipment, instrumentation, and other fields.
CHEKSINE is the manufacturer of this screw and can provide drawing design and production customization services. According to customer needs, CHEKSINE can customize materials, sizes, surface treatments, etc. to ensure that each screw can perfectly meet the customer's technical requirements.
This cup head screw has a wide range of application potential in the industrial field due to its efficient fixing effect and corrosion resistance. If you need customization or more product information, CHEKSINE can provide you with detailed technical support and production solutions.
FAQ
Why is the Cup Point Grub Screw easy to loosen?
Cup head screws are mainly fixed by friction between the cup point and the workpiece surface. If the preload is insufficient during installation, the surface treatment is improper, or the working environment vibrates frequently, it is easy to loosen. It is recommended to use anti-loosening glue (such as thread locker) or double locking design to enhance stability.
How to ensure that the cup head screw will not damage the workpiece after tightening?
The Cup Point design will embed into the workpiece surface. If the material is soft (such as aluminum), it may be pressed out. Hard gaskets can be added to the contact surface, or Flat Point (flat head) or Cone Point (cone head) can be selected as an alternative; if Cup Point must be used, the torque value can be controlled to avoid over-tightening.
What should I do if the cup head screw is difficult to screw in?
Possible reasons include thread mismatch, burrs, or foreign matter blocking the hole. Suggestions:
Check whether the thread specifications of the screw and the hole are consistent;
Clean the threaded hole;
Slightly chamfer or re-tap if necessary;
Use lubricant to reduce friction.
What should I do if the screw rusts and affects performance?
Rust may make removal difficult or even damage the screws. Screws with anti-corrosion treatment (such as black zinc, electroplated nickel or stainless steel) should be used. If used in high humidity and high salt environments, it is recommended to choose materials or surface treatments with higher corrosion resistance.
How to determine whether the screw length is appropriate?
The length should meet the following two points:
The screw-in length ≥ 1.5 times the screw diameter (longer if it is a soft material);
It should not exceed the bottom hole to avoid interference or damage to parts.
Custom screws with appropriate shoulder length can be selected according to the actual assembly space.
Why is the hexagon socket easily damaged when tightening?
The reasons may include poor processing of the hexagon socket, poor tool matching or improper use. Recommendations:
Choose high-quality screws (with sufficient hexagon socket depth);
Use a hexagon socket wrench of precise size;
Control the force when tightening to prevent "slipping" and damage to the hexagon socket.
How to avoid screw failure due to repeated use?
Cup Point screws are designed to be permanently positioned. Repeated use will reduce the bite force and wear the cup point, resulting in reduced locking effect. It is recommended to avoid multiple disassembly or regular replacement; if it must be reused, check for deformation or thread damage.
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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