Reliable CNC 5-axis machining of custom screw cap; reliable OEM service
Reliable CNC 5-axis machining of custom screw cap; reliable OEM service
Our Ganyuan factory has over 20 years of experience in CNC precision machining, specializing in the production of a wide range of precision-machined parts. Equipped with numerous high-precision CNC lathes, precision milling machines, coordinate measuring machines, and other advanced production and testing equipment, we are committed to providing high-quality custom machining services. Please contact us for any custom machining needs.
Product Description
Screw Cap: The Perfect Guarantee of Precision Connections and Reliable Fastening
As a key component of mechanical connection systems, the manufacturing quality of screw cap directly affects the structural stability and safety of equipment. We focus on the research and development and manufacturing of screw cap, providing high-precision, high-performance nut solutions for various industries through advanced processing technology and innovative design solutions.
Material Characteristics and Performance Advantages

Reliable CNC 5-axis machining of custom screw cap; reliable OEM service
We offer a diverse selection of materials, including carbon steel, stainless steel, alloy steel, and copper alloys. Carbon steel screw cap, through precise heat treatment processes, can achieve strength grades from 8 to 12; stainless steel screw cap, with their excellent corrosion resistance, perform outstandingly in special environments; copper alloy nuts, with their excellent conductivity and explosion-proof properties, play an important role in electrical equipment and hazardous locations. Each material undergoes rigorous composition analysis and performance testing to ensure that its mechanical properties fully meet the requirements of different working conditions.
Precision Machining Technology
We are equipped with multi-station cold heading machines and precision CNC machine tools to achieve efficient and precise machining of screw cap. Through optimized mold design and forming processes, we ensure that the thread accuracy reaches 6H grade, and the flatness error of the bearing surface does not exceed 0.05mm. For different specifications of nuts, we employ a combination of cold heading and machining processes, significantly improving production efficiency while ensuring product quality. Our machining system ensures complete thread profile and precise pitch, guaranteeing reliable connections.
Professional Heat Treatment and Quality Assurance
We offer comprehensive heat treatment solutions, including advanced processes such as quenching, tempering, and carburizing. Through precisely controlled heat treatment parameters, a uniform hardened layer is formed on the nut surface while maintaining the core's toughness. Each nut undergoes rigorous quality inspections, including dimensional checks, torque tests, and hardness tests, ensuring compliance with international standards such as GB, ISO, and DIN. We also offer various surface treatments such as galvanizing, nickel plating, and Dacromet coating, with salt spray testing times exceeding 1000 hours.
We have provided professional screw cap manufacturing services to various sectors, including construction engineering, automotive manufacturing, and machinery equipment. With a comprehensive quality management system and extensive production experience, we can provide all-around services from material selection to mass production, tailored to specific customer needs. We always adhere to the principle of seeking development through quality and breakthroughs through innovation, providing reliable and durable screw and nut products for various equipment.
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
- Commercial packaging: 1pc/plastic bag + color box +carton + pallet;
- Industrial packaging: (1). plastic tube + carton + pallet; (2). plastic bag + kraft paper + carton + pallet;
- 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