Square Head Bolt Manufacturer
Our Square Head Bolts are engineered for heavy-duty applications where firm grip, easy tool engagement, and strong torque resistance are required. Fasteners India is a reliable Square Head Bolt 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.
Production Excellence at Fasteners
Every Square Head Bolt is manufactured under strict quality control to ensure dimensional accuracy and consistent mechanical performance. Fasteners India operates a modern manufacturing facility equipped with forging machines, CNC machining centers, precision thread rolling units, heat treatment furnaces, and advanced inspection systems.
What Are Square Head Bolts?
Square Head Bolts are traditional fasteners featuring a square-shaped head that offers superior wrench grip and torque control. They are commonly used in structural steel, heavy machinery, and industrial maintenance applications.
Key Performance Advantages:
- Strong wrench grip
- High torque resistance
- Excellent load-bearing capability
- Reliable performance under vibration
- Suitable for rugged environments
Square Head Bolt Variants We Manufacture
- Fully threaded square head bolts
- Partially threaded square head bolts
- High tensile square head bolts
- Stainless steel square head bolts
- Custom square head bolts as per drawings and specifications
Materials & Strength Grades
Our square head bolts are manufactured using:
- Carbon Steel
- Alloy Steel
- Stainless Steel (SS 202, SS 304, SS 316)
Available grades:
- 6, 5.6, 8.8, 10.9, 12.9
End-to-End Manufacturing Process
- Selection of certified raw materials
- Hot or cold forging of square heads
- Precision machining and shank forming
- Thread rolling for superior 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 | 30 – 120 mm | 4.6, 5.6 | Black, Zinc plated |
M10 | Metric | 40 – 150 mm | 5.6, 8.8 | Black, Zinc plated |
M12 | Metric | 50 – 200 mm | 8.8 | Black, Phosphated |
M16 | Metric | 60 – 250 mm | 8.8, 10.9 | Black, Zinc plated |
M20 | Metric | 80 – 300 mm | 10.9, 12.9 | Black, Phosphated |
(Custom sizes, threads, and finishes available on request.)
Typical Application Areas
- Structural steel fabrication
- Heavy machinery and equipment
- Power plants and industrial units
- Railway and infrastructure projects
- Automotive and mechanical maintenance
- Manufacturing and processing plants
Why Choose Fasteners India for Square Head Bolts?
- In-house manufacturing with strict quality control
- Consistent dimensional accuracy and strength
- Competitive factory-direct pricing
- Bulk production and project supply capability
- Custom designs and packaging
- Timely delivery across Eastern and Central India
Regional Supply Coverage
Fasteners India supplies square head bolts across:
West Bengal, Odisha, Assam, Chhattisgarh, Jharkhand, Bihar, Maharashtra, Telangana, Delhi, Meghalaya, Tamil Nadu, Uttar Pradesh & Karnataka.
Contact Fasteners India Today
For dependable Square Head Bolt manufacturing in Kolkata, contact Fasteners India today for quotations, samples, and technical support.