Customized screw manufacturing services – We can customize length, diameter, and thread specifications.

Customized screw manufacturing services – We can customize length, diameter, and thread specifications.

Machine screws are manufactured using precision lathes and CNC technology, with materials including stainless steel and carbon steel. These screws undergo a series of processes, including cutting, heat treatment, and surface treatment. These high-precision, high-strength screws are widely used in mechanical and electronic applications, ensuring structural stability. We offer customized services to meet various needs.

Product Description 

Machine Screws: Key Components for Precision Electronic Assembly
Machine screws (also known as SMD miniature screws) are essential fasteners in electronic devices, widely used for securing PCBs, assembling precision instruments, and connecting microelectromechanical structures. Their high precision, corrosion resistance, and suitability for automation make them core components in modern electronic manufacturing. This section details the manufacturing process and applications of machine screws.

Customized screw manufacturing services – We can customize length, diameter, and thread specifications.

Manufacturing Process of Machine Screws

1. Material Selection and Blank Preparation
Machine screws are typically made of stainless steel (such as SUS304 and SUS316) or high-strength carbon steel to ensure corrosion resistance and mechanical strength. For high-precision applications (such as optical or medical devices), titanium alloy (TC4) may be used to reduce weight and increase durability.
The blanks are formed using precision cold-forming processes, ensuring dimensional accuracy of the screw head (e.g., hex, slotted) and thread, with tolerances controlled within ±0.01 mm to meet automation assembly requirements.
2. CNC Precision Machining
The threads of machine screws are typically machined using CNC turning and rolling processes to ensure thread uniformity and high precision. For ultra-miniature screws (e.g., smaller than M1.0), Swiss-type precision lathes are used for micromachining to prevent deformation. Furthermore, some specially designed machine screws (e.g., with stepped or non-standard heads) require five-axis CNC milling for precise machining of complex geometries.

3. Heat Treatment and Surface Treatment
Heat Treatment: Carbon steel requires quenching and tempering to increase hardness and tensile strength (up to grade 8.8 or 12.9).
Surface Treatment: Common treatments include:
Nickel plating: Improves corrosion resistance, suitable for general electronic equipment.
Gold plating: Used for applications requiring high conductivity (e.g., RF connectors). Black Oxide Coating: Enhances wear resistance, reduces glare, suitable for optical instruments.

4. Automated Inspection and Sorting
Machine screws undergo rigorous quality inspection before leaving the factory, including:
Optical inspection: Detects thread defects and nut integrity.
Salt spray test: Evaluates corrosion resistance of the coating (e.g., no rust after 48 hours).
Torque test: Ensures the tightening force meets standards (e.g., loosening torque of M2 screw must be ≥0.3 N·m).
Qualified products are automatically sorted by vibratory bowl and packaged in strips or trays for direct use by SMT pick-and-place machines.

Typical Applications of Machine Screws

PCB Mounting: Used to secure heat sinks, connectors, and modular components, preventing loosening due to vibration.
Precision Instruments: Used in assembling microstructures such as camera lens focusing mechanisms and medical endoscopes.
Consumer Electronics: Internal fastening in devices like smartphones and smartwatches, requiring ultra-lightweight and high-precision solutions.
Industrial Automation: Screws for critical components like robotic arm joints and servo motors require high vibration resistance.

Future Trends

Smaller Sizes: With the miniaturization of electronic devices, demand for machine screws of M0.6 and smaller sizes is increasing.
Intelligent Assembly: Combining AI vision positioning technology for fully automated screw fastening, improving production efficiency.
New Material Applications: For example, PEEK engineering plastic screws can be used for insulation or weight reduction.

Company Profile

         We are a manufacturer integrating industry and trade. We have more than 20 years of experience in production technology. We are located in Dongguan City, Guangdong Province, China. We have advanced high-end professional production and processing technology, and are committed to innovative R&D and production. After years of market tempering and exploration, it has high-quality technical management personnel, experienced designers, R&D personnel and a perfect company management system.

5-axis CNC workshop

         Our factory has a plant area of about 2,000 square meters and masters core processing technologies. It has high-end precision production equipment: CNC lathes, 5-axis CNC, 4-axis CNC, stamping equipment, die-casting equipment, etc.​

Auxiliary production equipment: electroplating, anodizing, hard anodizing and surface treatment. We have complete testing equipment: sophisticated three-dimensional testing, two-dimensional testing, hardness tester, height meter, projector and other conventional testing equipment. If you are interested in our products, please contact me and I will provide the best price support and quality service.

2D inspection equipment

Product Packaging

Packaging Details

1. Commercial packaging: 1pc/plastic bag + color box +carton + pallet;
2. Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet;
3. According to the requirement of customer.

FAQ

Q1: Where can I get product & price information?

A1: Send us an inquiry e-mail, we will contact you once we received your mail.

Q2: How long will I get the sample?

A2: Depends on your specific items, within 3-7 days generally.

Q3: What kinds of information do you need for a quote?

A3: Kindly please provide the product drawings in PDF, if provide in STEP or IGS will be better.

Q4: What are the payment terms?

A4: We accept 50% as a payment deposit, when the goods are prepared, we shoot photos or videos for your check, and then you can pay the balance. For small quantities, we accept Paypal, the commission will be added to the order. For big amounts, T/T is preferred.

Q5: How to deliver the goods?

A5: We deliver the products by courier company.

Q6: Are you a trading company or factory?

A6: We are factory direct with 17 experienced engineers and more than 50 employees as well approximate 3,000m2 workshop area.

Q7: What shall we do if we don’t have drawings?

A7: Please send your sample to our factory, then we can copy and provide you better solutions. If send us pictures or drafts with dimensions(Length, Height, Width), CAD or 3D file will be made for you.

Q8: Can we get some samples before mass production?

A8: Absolutely yes.

Q9: Will my drawings be safe after sending them to you?

A9: Yes, we will keep them well and won’t release them to the third party without your permission.

Q10: Is it possible to know the operation status of my products without visiting your company?

A10: We will offer a detailed production schedule and send weekly reports with digital pictures and videos which show the machining progress.

Q11: If you make poor quality goods, will you refund?

A11: In fact, we won’t take risks to produce poor-quality products. Meanwhile, we manufacture good quality products till you are satisfied.