Carriage Bolts
Asia Bolts Industries LLC supplies high-quality Carriage Bolts manufactured from carbon steel, stainless steel, and alloy steel materials. Featuring a smooth domed head and square neck design, carriage bolts provide secure fastening in wood, metal, construction, infrastructure, and industrial applications. Available in metric and imperial sizes with various coatings and finishes to meet project requirements across the GCC, Middle East, Africa, and international markets.
- Standards: DIN 603, ASTM A307 Grade A, BS 4933, ISO 8677
- Grades: Grade 4.6, 8.8, ASTM A307 Grade A
- Finishes: Hot Dip Galvanized (HDG), Zinc Plated, Stainless Steel 304/316
- Certification: Saudi Aramco Approved, ISO 9001, MTC EN 10204 3.1
Ideal for fencing, decking, timber framing, playgrounds, and agricultural equipment. Self-locking square neck eliminates the need for a wrench on the bolt head. Stock available in Dubai.
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Premium Carriage Bolts Manufacturer & Supplier
When fastening wood to wood or wood to metal, standard hex bolts can be difficult to install and often leave an unfinished look. Asia Bolts Industries LLC supplies high-quality carriage bolts (also known as dome head square neck bolts, mushroom head bolts, or coach bolts), engineered with a smooth, rounded dome head and a distinctive square neck that locks into the material to prevent spinning. This design allows for rapid, single-sided installation—perfect for fencing, decking, timber structures, and agricultural applications where aesthetics and security are paramount.
As a leading fastener manufacturer in UAE, we produce carriage bolts in a wide range of diameters and lengths, compliant with international standards like DIN 603 and ASTM A307. Whether you require hot dip galvanized bolts for outdoor fencing or stainless steel variants for marine decking, our inventory ensures you get the right fastener for durability and performance. Our Dubai-based facility supports rapid delivery for construction projects across the Middle East and beyond.
Technical Specifications
| Product Type | Carriage Bolt (Dome Head Square Neck Bolt, Coach Bolt) |
| Standards | DIN 603, ASTM A307 Grade A, BS 4933, ISO 8677, JIS B1187 |
| Head Style | Smooth Dome (Mushroom) Head with Square Neck |
| Property Classes | Grade 4.6 (Low Carbon), Grade 8.8 (Medium Carbon), ASTM A307 Grade A |
| Diameter Range | M6 to M36 (1/4″ to 1-7/16″) |
| Length Range | 20mm to 300mm+ (Custom lengths available) |
| Neck Design | Square section under head to prevent rotation; sized per DIN/ASTM standards |
| Material Options | Low Carbon Steel (C1008/C1018), Medium Carbon Steel (C1045), Stainless Steel 304 (A2), 316 (A4) |
| Surface Finish | Hot Dip Galvanized (HDG), Zinc Plated (BZP/YZP), Plain, Black Oxide, Stainless Steel (Passivated) |
| Thread Type | Coarse Thread (UNC/Metric Coarse) for better grip in wood |
| Testing | Tensile Strength, Hardness, Dimensional Inspection, Coating Thickness (for HDG), Salt Spray |
| Documentation | MTC EN 10204 3.1, Dimensional Reports, COC, COO |
Key Features & Benefits
The unique design of carriage bolts offers distinct advantages for specific applications:
- Self-Locking Square Neck: The square section under the head bites into wood or fits into a square hole in metal, preventing the bolt from spinning while you tighten the nut. This allows for single-sided installation.
- Smooth, Safe Head: The low-profile dome head has no slots or drive recesses, providing a snag-free surface ideal for playgrounds, walkways, and furniture where safety is critical.
- Aesthetic Appeal: The clean, rounded mushroom head offers a finished, decorative look preferred in architectural woodwork and visible fencing.
- Vibration Resistance: Once tightened, the square neck embedded in the material provides excellent resistance to loosening under vibration.
- Wood-Friendly: The coarse thread pitch provides superior pull-out resistance in timber compared to fine threads.
- 🏗️ High-rise Buildings & Commercial Construction
- 🌉 Bridges, Flyovers & Infrastructure
- ⚡ Power Plants & Substations
- 🛢️ Oil & Gas — Onshore & Offshore Platforms
- 🏭 Petrochemical & Industrial Facilities
- 📡 Transmission Towers & Telecom Structures
- 💧 Water Treatment Plants & Desalination
- 🚉 Rail & Metro Infrastructure
Packaging Information
📦 Standard: Cartons, wooden boxes or pallets based on quantity and customer requirements
🎁 Custom: Polybag + carton on request
🚢 Export: Fumigated pallets available
📋 Each box includes inspection certificate
Delivery Information
📦 Lead Time: Stock items: 1-5 days | Custom manufacturing: 7-30 days
🚢 Shipping Methods: Air freight, sea freight, or land transportation. FOB, CIF, DDP terms available.
📋 Full export documentation provided with every shipment: Commercial Invoice, Packing List, MTC, Bill of Lading, and Certificate of Origin
☑ Saudi Aramco Approved: Recognized vendor for critical upstream and downstream projects.
🔩 Custom Manufacturing: We produce non-standard lengths and diameters based on your drawings.
🏅 Triple ISO + CE Certified: ISO 9001 Quality, ISO 45001 Safety, and ISO 14001 Environmental certification, plus CE marking for European market compliance.
🏭 32,260 sqm Facility: أكبر مجمع لتصنيع أدوات التثبيت في الشرق الأوسط، مجهز بآلات التحكم الرقمي (CNC) المتقدمة وقدرات إنتاج داخلية كاملة.
🔬 In-House Testing Lab: تتبع كامل لمسار المواد بدءاً من المواد الخام وحتى المنتج النهائي؛ حيث نُجري كافة فحوصات الشد، والصلابة، والأبعاد، والتحليل الطيفي محلياً داخل منشأتنا.
🚚 Global Delivery: Shipped to 70+ countries via established logistics networks. Flexible packaging, documentation and third-party inspection support available.
