Anchor Bolts
Anchor bolts are specialized fasteners designed to secure structures, machinery, and heavy equipment to concrete or masonry foundations. These bolts play a critical role in construction, infrastructure projects, and industrial applications, ensuring stability, load-bearing strength, and seismic resistance.
At Rajal Industries, our ASTM, DIN, and IS-compliant anchor bolts are precision-engineered to withstand high loads, vibrations, and harsh environmental conditions, making them ideal for bridges, buildings, power plants, and heavy machinery installations.
Sizes & Standards
| Size Range | Standards |
|---|---|
| Diameters: 1/2" to 2-1/2" (Imperial) | ASTM F1554 – Standard for structural anchor bolts |
| Lengths: Variable | IS 5624 – Indian standard for foundation anchor bolts |
| DIN 529 – German standard for anchor bolts used in masonry & concrete |
Material & Strength Grades
| Material Type | Available Strength Grades | Industry Standards |
|---|---|---|
| Mild Steel & Carbon Steel | 4.6, 5.6, 8.8 | ASTM F1554, IS 5624, DIN 529 |
| Stainless Steel (Corrosion Resistant) | A2-70 (SS 304), A4-80 (SS 316) | ISO 3506, ASTM F1554, DIN 529 |
| High-Tensile Steel | Class 8.8, 10.9 | ISO 898-1, ASTM F1554, IS 5624 |
| Alloy Steel (Heat Treated) | Class 10.9, 12.9 | ISO 898-1, ASTM F1554 |
Head & Anchor Design Specifications
Anchor bolts are available in various head and embedded end configurations, depending on the structural and load requirements.
L-Bolts (Bent Anchor Bolts)
L-shaped design enhances holding power within concrete.
Commonly used in building foundations and structural supports.
J-Bolts
J-shaped hook provides secure anchorage in foundations.
Used in power transmission towers, bridges, and steel structures.
Straight Rod Anchor Bolts (Fully Threaded or Double Ended)
Provides deep embedment and high tensile strength for industrial equipment.
Ideal for power plants, machinery installations, and pre-engineered buildings (PEB).
Wedge & Expansion Anchor Bolts
Utilized for retrofit applications in concrete where drilling is required.
Commonly found in steel-to-concrete connections, guardrails, and bridge construction.
Sleeve Anchor Bolts
Provide removable fastening solutions with enhanced pull-out resistance.
Preferred for temporary fixtures, railings, and HVAC installations.
Thread Specifications & Precision Engineering
| Thread Type | Description | Application |
|---|---|---|
| Coarse Thread (UNC/ISO Metric) | Standard for high-load applications | Structural, construction, industrial machinery |
| Fine Thread (UNF/Metric Fine) | Provides higher tensile strength & better load distribution | Seismic-resistant structures, heavy-duty applications |
| Fully Threaded Anchor Bolts | Maximum adjustability and load-bearing | Adjustable base plate connections |
| Partially Threaded Anchor Bolts | Higher shear resistance, better clamping | Foundation anchoring |
Thread Fitment & Compliance
- Metric threads conform to ISO 6g tolerances, ensuring accurate engagement with nuts and mating components.
- Imperial anchor bolts adhere to ASTM F1554 and ASME B1.1 standards.
Corrosion Resistance & Environmental Suitability
Anchor bolts are used in outdoor, industrial, and marine environments, requiring proper surface protection for longevity.
| Coating Type | Corrosion Protection Level | Ideal Applications |
|---|---|---|
| Plain Steel (No Coating) | Low | Indoor use only |
| Zinc Plated (Yellow/Blue/White/Black) | Moderate (48-96 hours SST) | General construction, low-exposure environments |
| Hot-Dip Galvanized (HDG) | High (600+ hours SST) | Outdoor structures, bridges, high-moisture environments |
| Epoxy-Coated Anchor Bolts | Extreme | Automotive, machinery, industrial tools |
| Geomet/PTFE Coatings | Extreme (1000+ hours SST) | High-performance industrial and offshore applications |
Salt Spray Testing (SST) per ASTM B117 & ISO 9227 ensures long-term rust prevention and durability.
Common Applications of Anchor Bolts
- Structural Engineering & Foundation Anchoring – Used in buildings, bridges, and concrete foundations
- Heavy Machinery Installation – Secures industrial equipment, turbines, and compressors.
- Automotive & Manufacturing Plants – Fastens production lines, conveyor systems, and factory installations.s.
- Renewable Energy Sector – Essential for wind turbines, solar panel mounts, and power grid infrastructure.
- Marine & Offshore Structures – Used in ports, shipyards, and oil & gas rigs.
Why Choose Rajal Industries for Anchor Bolts?
Manufactured to International Standards
Ensuring dimensional accuracy, strength, and longevity.
Bulk & Custom Orders Available
Flexible manufacturing to meet your exact specifications.
High-Quality Material Selection
Ensuring long-lasting durability and reliability
Stringent Quality Control
Each bolt undergoes tensile testing, hardness testing, and thread fitment checks
Competitive Pricing & Timely Delivery
Efficient production and supply chain management
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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