4.6 Grade Foundation Bolt
4.6 Grade Foundation Bolt Manufacturer

Maa Engineering is a leading manufacturer of 4.6 Grade Foundation Bolts, serving industries across Kolkata, West Bengal, Odisha, Bihar, Jharkhand, Chhattisgarh, and Assam. With a commitment to quality and precision, we deliver durable and reliable Foundation Bolts designed to meet the diverse needs of our clients in construction, infrastructure, and industrial sectors.
What is 4.6 Grade Foundation Bolt?
The 4.6 Grade Foundation Bolt refers to a bolt with a specific strength and mechanical property classification as defined by industry standards:
- “4”: Indicates the tensile strength of 400 MPa (megapascals).
- “6”: Indicates the yield strength is 60% of the tensile strength, i.e., 240 MPa.
These bolts are known for their moderate strength and ductility, making them suitable for light to medium-duty applications.
Uses of Foundation Bolts
Foundation bolts are essential fasteners used to secure structures and machinery to their foundations. Their uses include:
- Construction Applications: Anchoring columns, beams, and structural frameworks to foundations.
- Industrial Machinery: Securing equipment such as compressors, turbines, and generators.
- Infrastructure Projects: Fixing heavy structures like bridges, towers, and railways.
- Power Plants: Anchoring equipment in thermal, hydro, and nuclear power plants.
- Signboards and Poles: Securing streetlights, signage, and poles to their bases.
Differences Between 4.6 Grade Foundation Bolt and Other Grades
Feature | 4.6 Grade | 8.8 Grade | Other Grades (e.g., 5.6, 10.9) |
Tensile Strength | 400 MPa | 800 MPa | Varies by grade, typically higher or lower. |
Yield Strength | 240 MPa | 640 MPa | Depends on the grade classification. |
Application | Light to medium-duty tasks | Heavy-duty applications | Varies based on grade properties. |
Ductility | Higher ductility for flexibility | Lower ductility, more rigidity | Varies depending on tensile/yield strength. |
Cost | More economical | Higher cost due to higher-grade material | Varies based on the strength and treatment. |
4.6 Grade Foundation Bolts are ideal for projects where moderate strength and cost-efficiency are prioritized, while higher-grade bolts like 8.8 are used for heavy-duty applications requiring greater strength and load-bearing capacity.
Why Choose Maa Engineering for 4.6 Grade Foundation Bolts?
- Precision Manufacturing: Advanced technology and skilled craftsmanship ensure high-quality bolts.
- Custom Solutions: Tailored designs to meet your specific requirements.
- Reliable Quality: Adherence to international standards for mechanical properties and durability.
- Extensive Service Area: Efficient delivery across Kolkata, West Bengal, Odisha, Bihar, Jharkhand, Chhattisgarh, and Assam.
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