GI Fasteners

R. G. International is a leading manufacturer and supplier of Galvanized Iron (GI) Fasteners based in Kolkata, West Bengal, offering a comprehensive range of high-strength fastening solutions for infrastructure, power, railway, solar, and industrial applications. Designed for reliability, durability, and corrosion resistance, our GI fasteners are widely used in critical structural connections where safety and performance are paramount.

All GI fasteners are manufactured in accordance with IS: 3063–1994 specifications and hot-dip galvanized to ensure uniform coating thickness and long service life. With a robust monthly production capacity of 500 metric tons, R. G. International is well-positioned to support large-scale and time-bound project requirements across domestic and international markets.

Technical Specifications

Our GI fasteners are engineered to meet stringent mechanical and dimensional requirements.

• Standard Specification: IS: 3063–1994
• Diameter Range: M8 to M64
• Monthly Production Capacity: 500 MT
• Surface Finish: Hot-dip galvanized
• FManufacturing Capability: Standard and customized fasteners

Range of GI Cable Trays & Accessories

GI Bolts

R. G. International manufactures a wide variety of GI bolts designed for structural strength, load-bearing performance, and long-term durability.

• Hex Head Bolts: Widely used in structural steel connections, machinery assembly, and industrial fabrication, offering reliable tightening and ease of installation.
• Anchor Bolts: Used for securing structures and equipment to concrete foundations, providing strong anchorage and stability.
• U-Bolts: Ideal for clamping pipes, tubes, and round structures in power, plumbing, and industrial installations.
• Eye Bolts: Designed for lifting, rigging, and securing cables or chains, ensuring safety and load reliability.
• Structural Bolts: High-strength bolts used in heavy steel structures, transmission towers, bridges, and infrastructure projects.
• T-Head Bolts: Suitable for specialized fastening applications where slot engagement and alignment are required.
• Railway Bolts: Manufactured to meet stringent railway standards, used in track fastening, electrification, and railway infrastructure projects.

GI Nuts

We manufacture precision-engineered GI nuts that ensure secure fastening and compatibility with high-strength bolts.

• Hex Nuts: Standard nuts used across a wide range of industrial and structural applications.
• Heavy Hex Nuts: Designed for high-load applications requiring enhanced strength and durability.
• Lock Nuts: Used to prevent loosening under vibration and dynamic loads, ensuring long-term joint integrity.

GI Washers

R. G. International supplies a comprehensive range of GI washers designed to distribute load evenly and protect fastening surfaces.

• Plain / Flat Washers: Used to spread load and reduce surface damage.
• Spring Lock Washers: Prevent loosening due to vibration and thermal expansion.
• Pack Washers: Used for spacing and alignment in structural assemblies.
• Flat Big & Small Washers: Suitable for varying load and surface requirements.
• Taper Washers: Designed for structural applications involving sloped or angled surfaces.

Other GI Fasteners

In addition to bolts, nuts, and washers, we manufacture a range of specialized GI fasteners, including:

• Threaded Rods: Used for anchoring, bracing, and suspension systems.
• Rivets: Suitable for permanent fastening in structural and fabrication applications.
• Hot-Forged Pins: Used in heavy-duty mechanical and structural connections requiring high shear strength.

Applications of GI Fasteners

• Power Transmission & Distribution Structures
• Solar and Wind Energy Projects
• Railways & Metro Infrastructure
• Telecom Towers
• Construction & Industrial Fabrication
• PEBS & Heavy Engineering
• Infrastructure & Utility Projects

Quality Assurance & Manufacturing Excellence

R. G. International follows ISO 9001:2015 certified quality management systems and maintains in-house testing facilities to ensure mechanical strength, dimensional accuracy, and galvanization thickness. Each GI fastener undergoes strict inspection to meet project specifications, industry standards, and performance expectations.

Why Choose R. G. International for GI Fasteners

• Leading GI fasteners manufacturer in Kolkata
• Compliance with IS: 3063–1994 standards
• Wide diameter range from M8 to M64
• High monthly production capacity of 500 MT
• Hot-dip galvanized for superior corrosion resistance
• Customized fasteners as per drawings and project needs
• Reliable supplier for domestic and export markets