- zsdscrew.com
- WA: +86 137 7630 6699
China ZhongSiDe Fasteners Co., Ltd. —— is a professional manufacturer in China specializing in the R&D and production of standard and custom fasteners.
With complete in-house manufacturing and strict quality control, we provide reliable, cost-effective OEM solutions for the mechanical, automotive, and energy industries worldwide.
All materials and models can be produced according to requirements.
Our screws can withstand rigorous tests, including tensile strength testing, hardness testing, salt spray testing, torque testing, etc.
Quality Assured: IATF 16949 & ISO 9001 & TS16949 Certified. Products manufactured to ISO, DIN, EN, ANSI,ect specifications.
ZhongSiDe Fasteners Co., Ltd.——located in Suzhou, Jiangsu Province, China, adjacent to Shanghai. Our in-house production processes cover cold heading, CNC machining, hot forging and heat treatment, enabling us to produce both standard fasteners and complex non-standard fasteners with stable quality and fast lead time.
Our company's current factory covers an area of 24,000 square meters and has produced more than 20,000 styles of precision screw products. Our factory has more than 60 screw making machines and 10 multi-station machines, with an annual output of more than 5,000 tons of screws and an annual output value of more than RMB 140 million.
We can meet your needs for any material and model, standard parts, and non-standard customized fasteners. From small precision screws to large heavy-duty bolts, we provide you with flexible procurement solutions and professional technical support. Including bolts, nuts, screws, studs, washers, self tapping screws, wood screws, rivets, dowels, retaining rings, components, etc.
A: We are a certified source factory located in SuZhou, China, with 16+years of expertise. Unlike trading companies, we operate our own cold-heading and thread-rolling lines, offering you factory-direct pricing, total quality control, and transparent production timelines.
A: It represents the highest quality standard in the automotive industry. For you, this means Automotive-Grade precision, 100% batch traceability, and a "Zero Defect" management philosophy applied to every fastener we produce, regardless of your industry.
A: Absolutely. Customization is our core strength. Our engineering team works with CAD, SolidWorks, and 3D Step files. From specialized head types to complex multi-station parts, we provide a one-stop solution from rapid prototyping to mass production.
A: Beyond our IATF protocols, we utilize high-speed automated optical sorting machines. These systems inspect 100% of the batch for dimensional accuracy, thread integrity, and surface defects, ensuring we meet your strict PPM (Parts Per Million) requirements.
A: Yes. As an IATF-certified partner, we provide full PPAP Level 3 packages, including Control Plans, PFMEA, and ISIR. Every shipment is accompanied by a 3.1 or 3.2 Material Test Report to verify chemical and mechanical compliance.
A: For standard stock items, there is no MOQ—you can order by the box. For custom parts, the MOQ depends on the specifications. We offer free samples for quality evaluation (customer covers shipping), which can be fully refunded upon mass production orders.
A: Stock items are shipped within 24-72 hours. Standard production typically takes 20-30 days, while complex custom projects (including tooling) take 35-45 days. We provide a firm delivery commitment with every quotation.
A: Yes. We offer DDP services globally (USA, Europe, Southeast Asia, etc.). We handle all freight, customs clearance, and import duties, delivering the goods directly to your door so you can focus on your business without logistics headaches.
Salt spray machine
Projector
Rallying machine
spectrometer
Rockwell hardness tester
