12.9 Grade Hexagonal Bolts Manufacturer
Fasteners India is a leading 12.9 Grade Hexagonal Bolts manufacturer based in Kolkata, catering to clients across West Bengal, Odisha, Assam, Chhattisgarh, Jharkhand, Bihar, Maharashtra, Telangana, Delhi, Meghalaya, Tamil Nadu, Uttar Pradesh & Karnataka. Our 12.9 Grade Hexagonal Bolts are engineered for extreme load-bearing applications where superior strength and reliability are essential.
Our Engineering Capability
We focus on delivering consistent quality for high-performance industrial fastening needs.Fasteners India operates advanced manufacturing units equipped with precision machinery, heat treatment facilities, and stringent inspection systems.
What Makes 12.9 Grade Hex Bolts Unique?
12.9 Grade Hexagonal Bolts are high tensile fasteners known for their exceptional strength and durability. They are ideal for critical structural, mechanical, and heavy-duty applications.
Key Characteristics:
- Extremely high tensile and yield strength
- Excellent resistance to fatigue and vibration
- Precision threading for accurate torque application
- Suitable for high-load and dynamic conditions
- Long service life under harsh environments
Product Variants Offered
Fasteners manufactures and supplies:
- Fully threaded hexagonal bolts
- Partially threaded hexagonal bolts
- High tensile structural bolts
- Special length and custom-design hex bolts
Raw Materials & Surface Finishes
Our 12.9 grade hex bolts are produced using:
- High-quality alloy steel
Available finishes include:
- Black finish
- Zinc plated
- Phosphated
- Special coatings as per customer requirement
Manufacturing & Quality Assurance Process
- Selection of certified alloy steel
- Precision forging of hex heads
- Thread rolling for superior strength
- Heat treatment to achieve 12.9 grade properties
- Surface finishing and corrosion protection
- Mechanical testing for tensile, yield, and hardness
- Final inspection and secure packaging
Technical Specification Chart
Bolt Size | Thread Type | Length Range | Grade | Finish |
M6 | Metric | 20 – 100 mm | 12.9 | Black / Zinc plated |
M8 | Metric | 25 – 150 mm | 12.9 | Black / Phosphated |
M10 | Metric | 30 – 200 mm | 12.9 | Black / Zinc plated |
M12 | Metric | 40 – 250 mm | 12.9 | Black / Phosphated |
M16 | Metric | 50 – 300 mm | 12.9 | Black / Zinc plated |
(Custom sizes, threads, and finishes available on request.)
Typical Application Areas
- Heavy machinery and equipment
- Automotive and transport systems
- Structural steel fabrication
- Power plants and industrial installations
- Mining, oil & gas, and infrastructure projects
Why Choose Fasteners India for 12.9 Grade Hex Bolts?
- Advanced manufacturing technology
- Consistent mechanical performance
- Competitive pricing
- Bulk production and timely supply
- Custom sizes and packaging
- Strong regional service network
Service Coverage
Fasteners India supplies 12.9 grade hex bolts across:
West Bengal, Odisha, Assam, Chhattisgarh, Jharkhand, Bihar, Maharashtra, Telangana, Delhi, Meghalaya, Tamil Nadu, Uttar Pradesh & Karnataka.
Contact Fasteners India Today
For reliable 12.9 Grade Hexagonal Bolts manufacturing in Kolkata, contact Fasteners India for quotations, datasheets, and project support.