OEM/ODM Screws, Bolts Manufacturers

Custom Screws, Bolts & Fasteners – From Our Factory to Your Line

Zhejiang Donghe Machinery Technology Co., Ltd. is a high-tech enterprise and manufacturer of fasteners, headquartered in Jiashan County, Zhejiang, China. Since 2009, we have operated a dedicated factory with over 100 sets of machines, a team of more than 100 employees, and an annual production capacity of 8,000 tons. We supply standard and custom fasteners to Europe, Australia, Africa, the United States, and other global markets, supporting OEM and ODM projects with in-house engineering and quality control.

Our product range covers screws, bolts, nuts, washers, stamped parts, rigging, and non-standard components across multiple material families. We manufacture to Chinese GB, German DIN, American ANSI, and British B standards, and we routinely produce non-standard parts from customer drawings or samples. Whether you need a high-volume standard screw or a specialized titanium fastener, our factory is equipped to deliver consistent quality and reliable supply.

Our Product Range and Application Fit

We organize our catalog into application-driven categories so you can quickly identify the right fastener family for your project. Each category reflects a distinct set of engineering requirements, from mechanical strength to corrosion resistance and installation efficiency.

Engineering Value and Customization

Our engineering team works from your drawings, samples, or a simple specification to develop the right fastener. We have in-house mold-making capability and a cold heading workshop, which allows us to control tooling and production for custom geometries. We also operate a quenching furnace for heat treatment, ensuring mechanical properties meet your load and hardness requirements.

For non-standard parts, we can adjust head style, thread pitch, length, material grade, and coating. We also support secondary operations like CNC machining for complex features. Our goal is to provide a fastener that fits your assembly process and performs reliably in service.

Quality Assurance and Testing

We are ISO 9001:2000 certified and maintain our own laboratory for quality testing. Our inspection equipment includes optical sorting technology to check dimensional accuracy and surface defects on high-volume parts. We also have environmental and occupational health & safety management systems in place, reflecting our commitment to responsible manufacturing.

Every batch is subject to process control, from incoming material verification to final inspection. We can provide material certificates, dimensional reports, and test results as part of your documentation package.

Installation, Maintenance, and Service

We design fasteners for easy installation, whether that means self-tapping points, hi-low threads for plastics, or pre-applied coatings for corrosion resistance. Our technical support team can advise on torque specifications, hole sizes, and installation tools to avoid field issues.

For maintenance and spare parts, we can supply replacement fasteners for existing equipment, matching original specifications or improving on them with better materials or coatings. We also offer packaging options that protect parts during transit and simplify inventory management.

Information We Use to Configure Your Solution

To prepare an accurate quotation and production plan, we need the following details from your side:

• Fastener type and dimensions (diameter, length, thread pitch, head style)
• Material grade and any special coating or plating requirements
• Mechanical properties (strength class, hardness, tensile load)
• Quantity and packaging preference (bulk, boxed, labeled)
• Applicable standard (DIN, GB, ANSI, BS) or a drawing/sample for non-standard parts
• Intended application and environmental conditions

With this information, we can recommend the most cost-effective material and manufacturing route, confirm lead times, and provide samples for approval before mass production.

Why Choose Donghe as Your Fastener Supplier

As a China-based manufacturer with self-operated import/export rights, we offer direct factory pricing and full control over quality and delivery. Our 8,000-ton annual capacity allows us to handle both large-volume orders and smaller custom runs. We are experienced in exporting to regulated markets and can provide the necessary documentation for customs clearance.

We are committed to long-term partnerships, offering technical support from design to after-sales. Our team is responsive to inquiries and works to resolve any issues quickly. We believe in pragmatic innovation and integrity in every transaction.

Frequently Asked Questions

What is your minimum order quantity (MOQ)?

Our MOQ depends on the product type and size. For standard screws and bolts, we can accommodate small trial orders, while mass production typically requires higher quantities. Contact us with your specifications, and we will provide a tailored MOQ.

Can you produce fasteners according to our drawings?

Yes, we specialize in non-standard fasteners. Send us your drawings or samples, and our engineering team will review them for manufacturability and provide a quotation. We can also suggest design improvements for cost or performance.

What materials and coatings do you offer?

We work with carbon steel, stainless steel (304, 316), aluminum, brass, copper, and titanium alloys. Common coatings include zinc plating, phosphate, hot-dip galvanizing, and mechanical galvanizing, depending on corrosion resistance needs.

Do you provide samples before mass production?

Yes, we can produce samples for your approval. Sample lead time is typically 7-15 days, depending on complexity. We may charge a sample fee, which is refundable for large orders.

How do you ensure quality for large orders?

We follow ISO 9001 procedures, with in-process inspections and final random sampling. We use optical sorting for high-volume parts and can provide inspection reports upon request.

What is your typical lead time?

For standard products, lead time is usually 15-25 days after order confirmation. Custom products may take longer depending on tooling and material availability. We will provide a clear schedule with your quotation.