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Some Statistics About Us You Must Know
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19
+
YEARS OF EXPERIENCE
3000㎡+
FLOOR SPACE
160
+
MACHINERY EQUIPMENT
3500
+
SATISFIED CUSTOMERS
Zeyao is a professional manufacturer with 19 years of experience in fastener production, focusing on providing high-quality standard parts and non-standard fastening solutions to global customers. We possess over 160 sets of advanced production equipment, covering the entire process from cold heading, tapping, riveting, to testing, forming a highly efficient and stable automated production system with a monthly output exceeding 10 million pieces, easily handling large-volume order demands.
As a trusted fastener supplier in the industry, Zeyao supports OEM/ODM customization services. We can flexibly adjust dimensions, materials, surface treatments, and packaging solutions according to customer drawings, samples, or functional requirements to meet diverse needs across different countries, industries, and application scenarios.
Our products are exported to over 100 countries and regions, and we maintain long-term, stable partnerships with over 3,500 customers worldwide, covering multiple industries including machinery, automotive, construction, electronics, furniture, and energy.
Product Picture
Product Features
1. Square Neck Design
The square neck at the bottom of the DIN603 Carriage Bolt is one of its core design features, allowing it to firmly embed into materials (such as wood, composite boards, or pre-drilled steel plates) during installation.
Prevents Bolt Rotation: During installation, the square neck, once embedded in the material, secures the bolt, preventing rotation when tightening the nut and improving assembly accuracy.
Saves Tools and Time: Installation can be completed without additional fixing tools or clamps, making it especially suitable for mass production and rapid on-site assembly.
Even Stress Distribution: The square neck provides stable support, making the bolt more stable under tensile or shear forces, effectively preventing material loosening or damage.
2. Round Head Structure
The round head design is not only aesthetically pleasing but also highly practical:
Safe to Hands: The smooth surface of the round head reduces the risk of scratches to hands or damage to other materials upon contact.
Aesthetically Pleasing: Suitable for furniture, decorative structures, or visible installation scenarios, while maintaining a secure connection.
Reasonable load-bearing capacity: The rounded head design evenly distributes pressure, reducing localized stress concentration on the material, thereby improving connection stability and durability.
3. Multiple Material Options
Depending on different applications, DIN603 Carriage Bolt is available in a variety of materials and surface treatments:
Carbon Steel: High strength, cost-effective, suitable for general machinery, woodworking, and building structures.
Stainless Steel: Excellent corrosion resistance and weather resistance, suitable for humid, chemical environments, and outdoor installations.
Zinc-Plated: Zinc plating on carbon or low-carbon steel further enhances corrosion resistance and rust prevention, extending service life.
Special Surface Treatments: Black anodizing, colored coating, or other anti-corrosion treatments are available upon request.
4. Standardized Sizes
A wide range of sizes to meet diverse application needs:
Metric sizes: M6, M8, M10, M12, M16, etc.
Imperial sizes: 1/4-20, 5/16-18, 3/8-16, etc.
Customizable lengths: Supports various bolt lengths to accommodate materials or sheet metal structures of different thicknesses.
Wide applicability: Suitable for everything from small furniture parts to large industrial structural components.
5. Easy Installation
Can be used with nuts, washers, or locking devices for quick installation.
The square neck self-locks after embedding into wood or metal holes, eliminating the need for reverse clamping during installation.
Suitable for manual installation or mass mechanical assembly, significantly improving production efficiency.
Suitable for scenarios where welding or tapping is impossible, avoiding additional costs due to material deformation or damage.
6. High Load-Bearing Capacity
Tensile Load: Suitable for structural connections subjected to longitudinal tension, such as furniture frames or timber beam connections.
Shear Load: The square neck fits snugly against the material opening, preventing bolt rotation or slippage; suitable for structures subjected to transverse shear forces.
High-Stress Applications: Widely used in machinery, construction, railway, or shipbuilding structures where high-strength connections are required.
High Durability: High-quality materials and precision machining ensure reliable fastening even after long-term use.
Customization options
1. Material Customization
Carbon steel, stainless steel (such as 304, 316), alloy steel, copper, aluminum, titanium, etc.
2. Customized Specifications and Dimensions
Screw diameter, length, and pitch can be customized upon request. We support standards such as GB, UNC/UNF, DIN, and BSW, as well as custom sizes.
3. Customized Surface Treatment
Galvanizing (white and colored), blackening, electrophoresis, Dacromet, nickel plating, chrome plating, and spray coating.
Enhanced rust resistance, aesthetics, and service life.
4. Customized Structure/Appearance
Customizable head shapes (round, flat, countersunk, hexagonal, and torx heads).
Optional thread types, holes, anti-theft features, and other functional designs are available.
5. Customized Packaging
Bulk, boxed, bagged, and custom labeling are available.
We support neutral packaging, customer-branded packaging, and standard foreign trade packaging.
6. Prototyping Service
We provide fast prototyping services, with mass production following sample confirmation.
7. Logo/Brand Customization (ODM)
We can imprint your logo or serial number on your product.
We provide one-stop ODM development services, providing comprehensive support from design to mass production.
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