Coupling Bolt Manufacturer
Fasteners India is a trusted Coupling Bolts manufacturer based in Kolkata, delivering high-strength fastening solutions across West Bengal, Odisha, Assam, Chhattisgarh, Jharkhand, Bihar, Maharashtra, Telangana, Delhi, Meghalaya, Tamil Nadu, Uttar Pradesh & Karnataka. Our Coupling Bolts are engineered for secure shaft connections, alignment, and long-term performance in mechanical and industrial assemblies.
Production Strength at Fasteners India
Fasteners India operates a modern manufacturing facility equipped with CNC turning machines, thread rolling units, controlled heat treatment furnaces, and advanced inspection systems. Every Coupling Bolt is produced under strict quality control to ensure dimensional accuracy, strength, and reliability.
What Are Coupling Bolts?
Coupling Bolts are used to join two shafts or components together, typically through a coupling system. They are designed to maintain alignment, transmit torque, and resist vibration in rotating machinery.
Key Functional Benefits:
- Strong load-bearing capacity
- Accurate alignment support
- Resistance to vibration and fatigue
- Secure locking under dynamic loads
- Long service life in harsh operating conditions
Coupling Bolt Variants We Manufacture
- Standard coupling bolts
- High tensile coupling bolts
- Full-thread and half-thread coupling bolts
- Precision-machined coupling bolts
- Custom coupling bolts as per drawings and specifications
Materials & Strength Grades
Our coupling bolts are manufactured using:
- Carbon Steel
- Alloy Steel
- Stainless Steel (SS 202, SS 304, SS 316)
Available grades:
- 8, 10.9, 12.9
End-to-End Manufacturing Process
- Selection of certified raw materials
- Precision forging and machining
- Thread rolling for high strength
- Heat treatment for required grade
- Surface finishing and corrosion protection
- Dimensional inspection and mechanical testing
- Final packaging and dispatch
Technical Specification Chart
Bolt Size | Thread Type | Length Range | Grade | Finish |
M8 | Metric | 40 – 120 mm | 8.8 | Black, Zinc plated |
M10 | Metric | 50 – 150 mm | 8.8, 10.9 | Black, Phosphated |
M12 | Metric | 60 – 200 mm | 10.9 | Black, Phosphated |
M16 | Metric | 80 – 250 mm | 10.9, 12.9 | Black, Zinc plated |
M20 | Metric | 100 – 300 mm | 12.9 | Black, Phosphated |
(Custom sizes, threads, and finishes available on request.)
Common Application Areas
- Shaft couplings and mechanical drives
- Pumps, compressors, and motors
- Gearboxes and power transmission systems
- Industrial machinery assemblies
- Power plants and heavy engineering units
- Manufacturing and processing equipment
Why Choose Fasteners India for Coupling Bolts?
- In-house manufacturing with strict quality control
- Consistent strength and dimensional accuracy
- Competitive factory-direct pricing
- Bulk production and project supply capability
- Custom designs and packaging
- Reliable delivery across Eastern and Central India
Regional Supply Coverage
Fasteners India supplies coupling bolts across:
West Bengal, Odisha, Assam, Chhattisgarh, Jharkhand, Bihar, Maharashtra, Telangana, Delhi, Meghalaya, Tamil Nadu, Uttar Pradesh & Karnataka.
Contact Fasteners India Today
For dependable Coupling Bolts manufacturing in Kolkata, contact Fasteners India today for quotations, technical support, and samples.