Expansion Anchors (Wedge Anchors)
Expansion Anchors, commonly referred to as Wedge Anchors, are mechanical fasteners designed for high-load applications in solid concrete and masonry. These anchors provide superior holding power, vibration resistance, and long-term durability, making them ideal for structural construction, industrial equipment anchoring, and infrastructure reinforcement.
At Rajal Industries, we manufacture ISO 9001-certified Expansion Anchors conforming to IS 5624 and global fastening standards, ensuring high pull-out resistance, corrosion protection, and optimal performance in load-bearing applications.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Metric: M6 to M24 | IS 5624 – Indian standard for mechanical expansion anchors |
| Imperial: 1/4" to 1" | ISO 9001 Certified – Quality management certification for precision manufacturing |
| Same specifications as Wedge Anchors |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Carbon Steel & Mild Steel | Class 5.8, 8.8, 10.9 | IS 5624, ISO 9001 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | ISO 3506 |
| Hot-Dip Galvanized Steel (Outdoor Use) | Class 8.8, 10.9 | IS 5624, ISO 9001 |
- Heat-Treated for Maximum Strength –Expansion anchors undergo quenching and tempering to enhance tensile strength and impact resistance.
- Load Ratings Based on Material & Application:
- Carbon Steel Class 8.8 Expansion Anchor: 800-900 MPa tensile strength
- Stainless Steel A4-80 Expansion Anchor: 700-800 MPa corrosion-resistant strength
Expansion Anchor Design & Engineering Features
Expansion Mechanism for Secure Concrete Anchoring
- The expanding clip grips the concrete surface, providing high pull-out strength.
Prevents anchor loosening due to dynamic forces, seismic loads, and mechanical vibrations.
Through Bolt Design for Quick & Reliable Installation
- Allows installation through the fixture, ensuring fast and easy anchoring.
Enables safe removal and reusability for temporary applications.
Heavy-Duty Holding Power & Vibration Resistance
- Engineered for seismic, impact, and dynamic loads.
Maintains long-term fastening in industrial machinery, infrastructure, and construction applications.
Corrosion-Resistant Coatings for Harsh Environments
- Available in zinc-plated, hot-dip galvanized, and stainless steel options.
Protects against moisture, chemicals, and environmental degradation.
Supplied with Pre-Assembled Nut & Washer for Easy Installation
- Eliminates loose component handling, making installation efficient and hassle-free.
Thread Specifications & Precision Engineering
| Thread Type | Description | Application |
|---|---|---|
| Coarse Thread (UNC/Metric) | Ensures fast engagement and high load resistance | Concrete, masonry, industrial fastening |
| Fine Thread (UNF/Metric Fine) | Provides higher tensile strength & precise load transfer | Structural reinforcements, mechanical applications |
| Fully Threaded Expansion Anchors | Allows maximum adjustability and secure fastening | Bridge construction, scaffolding, pipelines |
| Partial Thread Expansion Anchors | Offers better shear strength & enhanced load distribution | Railways, high-rise buildings |
Thread Fitment & Compliance
- Metric threads conform to ISO 6H tolerances, ensuring secure engagement with pre-drilled concrete holes.
- Imperial expansion anchors meet IS 5624 and ISO 9001 for universal compatibility in industrial and structural applications.
Common Applications of Expansion Anchors
- Structural Steel & High-Rise Construction – Used in concrete beams, seismic bracing, and bridge reinforcements.
- Heavy Machinery & Equipment Foundations – Provides secure mounting for industrial machines, HVAC systems, and compressors.
- Infrastructure & Railways – Ensures high-strength fastening in railway tracks, guardrails, and metro stations.
- Oil & Gas & Power Plants – Used in turbine foundations, oil refinery platforms, and offshore rigs.
- Automotive & Aerospace Engineering – Fastens high-precision machinery and test equipment.
Why Choose Rajal Industries for Expansion Anchors?
Manufactured to International Standards
Ensuring precision engineering, strength, and compliance.
High-Tensile Expansion Anchoring
Designed for load-bearing, vibration-resistant applications.
Customizable Variants Available
Offering stainless steel, galvanized, and high-strength expansion anchors.
Bulk & Custom Orders
Ideal for construction, railway, and industrial applications.
Stringent Quality Control
Each batch undergoes torque testing, pull-out resistance verification, and impact load assessment.
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Our Offices
C-204, Vaibhav Platina, Nr. Kaveri Trishra, S P Ring road, Shilaj, Ahmedabad, Gujarat-380054
Call us
+91-846 036 2030
Email Us
rajalfast@gmail.com sales@rajalindustries.com