China Square Head Wood Screw Manufacturers
Specializing in the production and sale of all kinds of square head wood screws and other fastener products with export rights.
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Specializing in the production and sale of all kinds of square head wood screws and other fastener products with export rights.
A trusted name in fastener manufacturing with over a decade of experience in producing high-quality screws, bolts, and custom fasteners for global markets.
Haiyan Longcheng Standard Parts Co., Ltd. is a renowned manufacturer and supplier of square head wood screws and other fastener products. Formerly known as Haiyan Shuangjian Standard Parts Factory, we have over 10 years of experience in the industry.
Our factory is located in Haiyan County, Hangzhou City, Zhejiang Province, China — a region known for its superior geographical position and convenient transportation networks.
With more than 50 employees and over 10 professional technical research projects completed, we are committed to innovation, quality, and customer satisfaction.
We specialize in manufacturing a wide variety of fasteners, including square head wood screws, hexagon bolts, stainless steel screws, and custom non-standard parts.
High-strength wood screws with square heads, ideal for heavy-duty woodworking and construction applications.
Precision-engineered hex head wood screws for industrial and furniture assembly use.
Corrosion-resistant stainless steel screws suitable for outdoor and marine environments.
Standard and high-tensile hex bolts for structural and mechanical applications.
Smooth domed head bolts with square necks, commonly used in wood-to-metal connections.
Dual-threaded wood screws for specialized joinery and repair applications.
Flat-head wood screws designed to sit flush with the surface for a clean finish.
Custom-designed fasteners tailored to unique client specifications and engineering needs.
Integrated washer face for improved load distribution and vibration resistance.
Durable U-shaped bolts made from corrosion-resistant stainless steel for piping and support systems.
As a leading fastener manufacturer in China, we offer unmatched quality, export capability, and technical expertise.
We have full export rights and have successfully shipped to clients across Europe, Asia, and the Americas.
Adhering to strict quality control standards and committed to creating the Longcheng brand globally.
Over 50 skilled employees and 10+ technical researchers ensuring innovation and precision.
Over a decade of specialization in manufacturing and exporting high-quality fasteners.
Stay updated with industry trends, technical knowledge, and company developments from Haiyan Longcheng.
Terminal client: European railway infrastructure project. Requirements included 45° thread chamfer, no crease at 90° angle, smooth surface finish, and 8–10μm zinc coating.
READ MOREBolt threads are generally cold-worked, allowing thread blanks within a certain diameter range to be formed efficiently with high precision.
READ MOREExample: 4 X 10 PW A H C (+). Includes diameter, length, drive type, head style, material, coating, and drive type.
READ MOREFor inquiries, quotes, or custom fastener solutions, reach out to our team. We’re ready to support your project needs.
+86 573 864 08988
weber_chen3@hotmail.com
No. 3, No. 2 Jincheng Road, Qinshan Development Zone, Haiyan County, Zhejiang, China
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