Premium Carriage Bolts – Secure Square Neck Fastening Solutions
Our Carriage Bolts (also known as Round Head Square Neck Bolts) are designed for heavy-duty timber-to-timber and timber-to-metal applications. Featuring a smooth, low-profile dome head and a specialized square neck, these fasteners provide a secure, tamper-resistant connection that is ideal for both structural integrity and aesthetic finish.
Technical Specifications & Key Features
Manufacturing Standards: Fully compliant with DIN 603, ISO 8677, and ASME B18.5 (Unified National Coarse thread).
Material Grades:
Carbon Steel: High-tensile Class 4.8 and 8.8.
Stainless Steel: Corrosion-resistant A2-70 (SS304) and A4-80 (SS316) for marine environments.
Dimensional Range:
Metric Sizes: M5 to M20 (Diameters).
Length: 20mm up to 300mm (Custom lengths available).
Surface Treatment:
Zinc Plated (Clear/Yellow), Hot Dip Galvanized (HDG) for maximum outdoor protection, and Black Oxide for furniture aesthetics.
Why Choose Our Carriage Bolts?
Anti-Rotation Design: The square neck underneath the head bites into the wood or metal during installation, allowing the nut to be tightened from the opposite side without the bolt spinning.
Enhanced Security: Once installed, the smooth round head is impossible to grip with tools from the outside, making it an excellent choice for public structures and security fencing.
Superior Durability: Our Galvanized Carriage Bolts are tested for salt spray resistance, ensuring they withstand harsh weather conditions without rusting.
Primary Industrial Applications
As a professional Carriage Bolts manufacturer, our fasteners are the preferred choice for:
Timber Construction: Ideal for building gazebos, decks, pergolas, and heavy-duty wooden framing.
Outdoor Furniture: Used in the assembly of garden benches, picnic tables, and playground equipment.
Security Fencing: Reliable fastening for gates, barriers, and public safety partitions.
DIY & Home Improvement: Perfect for shelving units and architectural wood-to-metal joins.
Professional Packaging
Standard Packaging: Bulk 25kg cartons or customized small box branding on sturdy, seaworthy wooden pallets.
Inventory Status: We maintain a large stock of M6, M8, M10, and M12 standard sizes for immediate global dispatch.
Quality Inspection: Each batch is certified with a Material Test Report (MTR) covering tensile strength and dimensional accuracy.
Contact Us for a Custom Quotation
Are you looking for a reliable Carriage Bolts supplier with factory-direct pricing? Contact our technical team today for a bulk quote and free samples for your next project.
Secure your structures with precision-engineered Carriage Bolts from WANSON FASTENER. Get Carriage Bolts Technical Specifications !
