GI/HDG Spline Bolt

Size- 3/8 x 3/4″, 3/8×28, 3/8 x 1″
Grade- 4.8,8.8,10.9,12.9
Surface- Hot dip, Galvanized

GI/HDG Spline Bolt – The Tough Bolt Built for Dubai’s Heavy-Duty Demands

When talking about strength and reliability, then GI/HDG Spline Bolt is the best choice builder, engineer, or contractor in Dubai. This bolt is made specifically for purposes that require extreme torque, anti-rotation, and a permanent grip; it is a true workhorse in the world of fasteners. The spline design permits a really snug fit and great resistance to slippage which makes it the ideal solution for steel structures, machinery foundations, and precast works throughout Dubai.

With either a Galvanized Iron (GI) or Hot Dip Galvanized (HDG) finish, these bolts provide an awesome corrosion-resistant feature, which is especially inessential in Dubai’s climate- heat, dust, and humidity put every material in a pretty difficult situation. It doesn’t matter if you are constructing a tower in Downtown Dubai, an industrial site in Dubai South, or a project in Jebel Ali; these bolts are built to outlast and outperform.


Why GI/HDG Spline Bolts Are Ideal for Dubai Projects

  1. 🔩 Precision-engineered spline design for zero rotation

  2. 🛡️ Rust-proof GI/HDG coating – ideal for Dubai’s weather

  3. ⚒️ Compatible with heavy loads and shear forces

  4. 🏗️ Widely used in Dubai’s infrastructure and construction zones

  5. 🧱 Supports structural integrity in bridges, towers, and more

  6. 🚧 Trusted by top contractors throughout Dubai

  7. 🔧 Smooth installation using impact tools or wrenches

  8. 🌍 Available in metric and imperial sizes for global projects in Dubai

  9. 🧰 Reduces wear and loosening over time in Dubai’s high-vibration environments

  10. 💼 Bulk supply options available across all of Dubai


Technical Specifications

  1. Material: Carbon steel (High-tensile)

  2. Coating Options: Galvanized Iron (GI) / Hot Dip Galvanized (HDG)

  3. Size Range: M12 to M36 (custom orders available)

  4. Strength Grades: 8.8 / 10.9 / 12.9

  5. Standards: ISO, ASTM, DIN compliant

  6. Applications: Steel frameworks, concrete-to-steel joints, heavy machinery, infrastructure projects

  7. Locations Supplied: Dubai Marina, Al Quoz, Dubai Silicon Oasis, Dubai Investment Park


Where It’s Being Used in Dubai

You’ll spot our GI/HDG Spline Bolts in major developments across Dubai — from bridge connections near Dubai Creek, to equipment foundations in Dubai Industrial City. They’ve been part of Expo 2020 structures, metro expansion joints, and precast segments in Dubai’s growing real estate boom.


FAQ – GI/HDG Spline Bolt

Q1: What makes spline bolts better than standard bolts?
Spline bolts prevent rotation during tightening, ensuring better alignment and grip, which is critical in structural joints seen throughout Dubai.

Q2: What’s the benefit of HDG coating in Dubai’s climate?
The HDG coating protects against humidity, salt, and sand — a must-have for outdoor use in Dubai.

Q3: Are these suitable for concrete-to-steel anchoring?
Yes, they are specifically used in Dubai projects for anchoring steel beams to precast slabs and foundations.

Q4: Can I get them delivered in bulk within Dubai?
Absolutely. We provide fast and reliable delivery across all major Dubai industrial and construction zones.

Q5: Do they comply with UAE building regulations?
Yes, all our spline bolts meet or exceed Dubai Municipality and UAE safety standards.


Built for Power, Ready for Dubai – Order Now

The GI/HDG Spline Bolt isn’t just a fastener — it’s a structural solution trusted across Dubai’s toughest builds. When you need uncompromising quality, long-term performance, and reliability under pressure — this is the bolt for the job.

👉 Buy now on AlHafoof.com – Dubai’s trusted industrial supplier.