Engineered to exact DIN, ISO, and ASTM standards for heavy industry, construction, and precision assemblies.
Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd. was established in 2015. It is an enterprise specializing in the production and operation of fasteners. Our company is committed to providing high-quality fastener products and providing customers with comprehensive solutions in various industries. As a reputable fastener manufacturer, we have advanced production equipment and a professional technical team to meet our customers' needs for different types of fasteners.
Operating out of Yongnian, Hebei—the fastener capital of China—we bridge local supply-chain velocity with world-class metallurgical research, offering clients a certified manufacturing structure. Our facilities feature highly automated cold heading machines, heat treatment lines, and precision electroplating stations, enabling consistent production of industrial bolts, nuts, washers, and custom components.
How Handan Yongnian's specialized ecosystem delivers quality, scalability, and cost efficiency to global markets.
A comprehensive study on mechanical strength, thread dynamics, corrosion barrier coatings, and vibration security.
In structural engineering, the concept of a "secure bolt" goes far beyond basic thread engagement. A secure bolting system must create a predictable, sustained clamping force (preload) under varying thermal, mechanical, and environment-induced stress states. Dongshuo's research and development focus heavily on the metallurgy of carbon steel and alloy steel grades.
The choice of material determines the ultimate tensile strength (UTS) and yield strength of the fastener:
"The safety of structural connections relies not just on the bolt's tensile strength, but on its fatigue resistance. A secure bolt must withstand millions of micro-cycles of tension and compression without failing due to crack propagation." — Dongshuo Metallurgy & R&D Laboratory.
An untreated steel bolt is vulnerable to rapid oxidation and thread galling. Industrial fasteners must receive customized surface treatments designed specifically for their final application environments. Below are the core coatings analyzed in our manufacturing process:
Typically applied to drywall nails and self-tapping screws. This iron-phosphate conversion coating forms a porous, micro-crystalline layer that holds lubricants (to ease installation torque) and serves as an excellent primer for paints and joint compounds.
Forms an active sacrificial zinc barrier that protects the underlying carbon steel from atmospheric moisture. Zinc plating is clean, uniform, and provides excellent cosmetic finish options (clear blue, yellow, or color passivations).
Essential for heavy outdoor structural bolts. HDG deposits a thick, durable layer of zinc-iron alloys, providing corrosion protection capable of enduring harsh marine and industrial environments for decades.
Vibration is the primary catalyst for fastener loosening. When dynamic loads act perpendicular to the bolt axis, micro-slip occurs at the contact threads. Once friction is overcome, the helical angle of the threads causes the bolt to back rotate.
To prevent this failure mode, Dongshuo designs secure bolting assemblies incorporating advanced locking solutions:
Providing high-torque security where performance and reliability are non-negotiable.
Delivering quality, manufacturing flexibility, and seamless communication to global engineering procurement teams.
The price is negotiable. It can be changed according to your quantity or packaging, maximizing your supply chain efficiency.
The sample requires a sample fee, which can be paid on delivery or you can pay us the fee in advance to expedite testing.
All of our products are made of high-quality environmentally friendly materials conforming to global quality standards.
We can adjust the Minimum Order Quantity (MOQ) dynamically to align with your production runs or pilot tests.
You can send your own design and logo. We can open new molds and logos, and then send samples for your confirmation.
Please email me or chat with me at your convenience. We look forward to long-term mutual partnerships.
Staying ahead of regulatory shifts, material science breakthroughs, and quality control demands.
Environmental regulations globally are enforcing strict bans on hexavalent chromium coatings due to their ecological toxicity. Modern procurement managers now demand trivalent zinc coatings, alloy platings, and organic-inorganic composite coatings (such as Geomet). These alternatives not only comply with RoHS and REACH regulations but also offer salt spray resistance exceeding 1,000 hours without red rust, a key requirement for marine and chemical infrastructure projects.
Field labor costs represent the largest expense in structural installation. Consequently, structural engineering firms are shifting from sourcing individual components (bolts, washers, nuts) to ordering pre-assembled structural units. Fastener assemblies—such as a hexagon head bolt pre-fitted with spring and plain washers—ensure that the field team uses the correct matching grades and dimensions, reducing on-site installation errors.
Global supply chains require agility. Partnering directly with a factory in Handan Yongnian provides major advantages: direct integration with steel manufacturers, a shared tooling network, and proximity to major shipping ports like Tianjin. This localized industrial cluster minimizes turnaround times for custom tooling and molds, reducing the production cycle from the standard 60 days down to 20-30 days.
Get professional answers regarding specifications, materials, pricing, and factory visits.
We are a factory. You are welcome to visit our factory in Handan City, Hebei Province, China. We operate our own cold-heading, thread-rolling, and quality inspection departments.
Our factory is located in Handan City, Hebei Province, China. You can fly directly to Handan Airport, which is about a one-hour drive away from our manufacturing plant. Alternatively, you can take a high-speed train to Handan East Station.
Fastener prices fluctuate based on raw wire rod costs, heat treatment gas pricing, and zinc metal exchange rates. Because of these dynamics, we do not issue a static price list. Please submit your technical drawings, material grades, coatings, and quantities directly to our sales team, and we will send you a detailed quote within 24 hours.
For payments under $1,000 USD, we require 100% payment in advance. For orders over $1,000 USD, we accept a 30% T/T deposit in advance, with the remaining balance due before shipment. We accept major foreign currencies (USD, EUR) as well as direct RMB bank transfers.
Yes, we provide standard samples free of charge. However, international courier costs must be covered by the customer. For custom CNC or stamped prototypes, a tooling fee may apply, which can be credited back toward your high-volume production order.
Direct from our factory floor. Heavy inventory support with customized OEM options.
Get in touch with Handan Yongnian Dongshuo Fastener Manufacturing Co., Ltd. for pricing, samples, and customized OEM fasteners. Our engineers are ready to support your technical specifications.
Handan Yongnian District Dongshuo Fastener Manufacturing Co., Ltd., Handan City, Hebei Province, China.
Submit your design specifications, raw material requests, and required certification standards directly to our office. We respond to all formal inquiries within 12 hours.
When you are keen on any of our items following you view our product list, please feel free to make contact with us for inquiries. You'll be able to send us emails and get in touch with us for consultation and we shall respond to you as soon as we are able to.
Handan Yongnian Dongshuo Fastener Manufacturing Co., Ltd.
Providing reliable, high-integrity, and customized structural solutions to international building projects, marine environments, and manufacturing operations.
Dongshuo
