Square Bolts
Square Bolts (Square Head Bolts) by Asia Bolts Industries are heavy-duty fasteners featuring a four-sided head designed for high-torque applications, timber construction, pipe clamps, and agricultural machinery. Manufactured to DIN 478, ASME B18.2.1, and ASTM standards in carbon steel, stainless steel, and alloy steel grades, our Square Bolts are produced at our Dubai Investment Park facility under ISO 9001, ISO 45001, and ISO 14001 certified quality systems and exported to 70+ countries across the GCC, Middle East, Africa, and Asia.
✅ Standard & custom sizes on request
✅ Full material traceability & MTC provided
✅ Hot-dip galvanised & coated options available
✅ Approved vendor: Saudi Aramco | ADNOC | SABIC
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Square Bolts – Square Head Bolt Manufacturer & Supplier in UAE
Asia Bolts Industries LLC is a leading Square Bolt manufacturer and supplier headquartered in Dubai, UAE, with over 25 years of fastener manufacturing expertise serving the oil & gas, construction, petrochemical, agricultural, and infrastructure sectors. Our Square Head Bolts are engineered for demanding environments where high torque, spanner grip, and embedment into wood or soft materials are critical to joint integrity.
Square Bolt Standards & Specifications
Asia Bolts Industries manufactures Square Bolts in compliance with internationally recognised standards:
| Standard | Description |
|---|---|
| DIN 478 | Square head bolts with short dog point |
| DIN 479 | Square head bolts with long dog point |
| ASME B18.2.1 | Square and hex bolts & screws – inch series |
| ASTM A307 | Carbon steel bolts, grade A & B |
| ASTM A325 | Structural bolts, high strength |
| BS 916 | Black square bolts, nuts, and screws |
| ISO 8765 | Hexagon head bolts with fine pitch thread (adapted square variants) |
Materials & Grades Available
| Material | Grade / Specification |
|---|---|
| Carbon Steel | Grade 4.6, 4.8, 8.8, 10.9 |
| Alloy Steel | ASTM A193 B7, B7M, B16 |
| Stainless Steel | AISI 304, 304L, 316, 316L, 321, 310S |
| Duplex / Super Duplex | UNS S31803 (2205), S32750 (2507) |
| Exotic Alloys | Inconel 625/718, Hastelloy C276, Monel 400, Titanium |
Surface finish and coating options include hot-dip galvanising (HDG), zinc electroplating, black oxide, PTFE coating, Geomet, and Dacromet — selected based on the corrosion exposure class and project specification.
Dimensions & Size Range
| Parameter | Range |
|---|---|
| Diameter | M6 to M100 (metric) | 1/4″ to 4″ (imperial) |
| Length | 10 mm to 500 mm or as per drawing |
| Thread Type | Metric coarse / fine, UNC, UNF, BSPP, BSPT |
| Head Type | Full square head, short dog point, long dog point |
| Tolerance | Grade A & B per ISO 4759-1 |
| Finish | Plain, HDG, zinc plated, PTFE coated |
Full threading (FT) and partial threading (PT) options are available across all size ranges.
- 🏗️ 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.
