Top 5 Types of Fasteners Used in Indian Railways

The Indian Railways, one of the largest rail networks globally, relies heavily on a variety of fasteners to ensure the safety, stability, and efficiency of its operations. These fasteners are crucial components that hold the railway infrastructure together, from tracks to rolling stock.

In this blog, we'll explore the top 5 types of fasteners commonly used in Indian Railways, shedding light on their functions and importance.

1. Fish Plates

Fish plates, also known as joint bars, are metal bars bolted to the ends of two rails to join them together in a track. They are essential for maintaining the alignment and continuity of the rails.

Key Features:

Typically made of mild steel.
Standard length is around 457 mm with four bolt holes.
Two main types used in India: Bone-shaped and Increased depth fish plates.

Function:

Typically made of mild steel.
Standard length is around 457 mm with four bolt holes.
Two main types used in India: Bone-shaped and Increased depth fish plates.

2. Rail Spikes

Rail spikes are large nails used to secure rails to wooden sleepers. They play a vital role in holding the rail firmly in place

Types Used in Indian Railways:

Dog Spikes
Screw Spikes
Round Spikes
Elastic Spikes

Function:

Secures rails to sleepers, preventing movement.
Maintains track gauge and alignment.
Provides stability under dynamic loads

3. Rail Bolts

Rail bolts are used to fasten various components of the railway track, ensuring structural integrity.

Common Types::

Fish Bolts: Connect fish plates to rails.
Hook Bolts: Secure sleepers to bridge girders.
Fang Bolts: Attach chairs to sleepers.
Rag Bolts: Fix sleepers to ash pit walls.

Function:

Provides strong connections between track components.
Ensures the stability and safety of the track structure

4. Rail Clips

Rail clips are modern fastening systems that secure rails to concrete sleepers, offering better elasticity and reduced maintenance.

Popular Types:

Pandrol Clips
E-Clips
SKL Clips.

Function:

Holds rails firmly to sleepers.
Absorbs vibrations and reduces noise.
Allows for slight movements due to thermal expansion

5. Rail Anchors

Rail anchors are devices attached to the rail base to prevent longitudinal movement of rails, especially on steep gradients and curves.

Function:

Prevents rail creeping due to temperature changes and train movements.
Maintains track alignment and gauge.
Enhances the overall stability of the track

Conclusion

Fasteners are the unsung heroes of the railway infrastructure, ensuring safety, stability, and efficiency. Understanding the various types of fasteners used in Indian Railways helps appreciate the complexity and engineering marvel behind the nation's rail network.

At Pankaj International, we specialize in manufacturing high-quality fasteners that meet the stringent requirements of the railway industry. Our commitment to excellence ensures that every component we produce contributes to the safety and reliability of railway operations.

Explore our range of railway fasteners at pankajinternational.com