5/8" HC Railroad Spike | Track Fasteners

The 5/8 HC Railroad Spike refers to a high-carbon steel track spike that is typically 5/8 inch in width and 6 inches in length, used to secure rails to wooden ties. This makes it stronger, harder, and more durable, which is important for railroad spikes as they need to withstand heavy dynamic loads, vibrations, and harsh environmental conditions.

Key Characteristics of 5/8 HC Railroad Spikes

• Size: The common size is 5/8" x 6", though some may be slightly longer at 6.5".

• Material: Made from high-carbon steel.

• Tensile Strength: Minimum 70,000 psi (some tests show ~85,000 psi).

• Carbon Content: Around 0.30% to 0.34% (not truly "high carbon" by knife standards).

• Yield Point: At least 0.5 times tensile strength (around 35,000 psi).

• Elongation: Minimum 25% in 2 inches. 

• Appearance: Spikes generally have a forge or mill finish and may exhibit surface rust, which is a natural result of the manufacturing process. They feature an offset head, chisel point, and square body. 

Purpose & Use of 5/8 HC Railroad Spikes

• Railroad Fastening: 5/8 HC railroad spikes are used to secure rail tracks to wooden ties (sleepers) in various rail applications, including freight and passenger lines.

• Load Distribution: These spikes help to distribute the forces from the rail across the tie, preventing rail movement and maintaining track alignment under dynamic loads.

• Durability: The high carbon content enhances the spike's ability to resist wear and corrosion, ensuring that the fastening system performs reliably over long periods, even under heavy traffic and extreme weather conditions.

Advantages of 5/8 HC Railroad Spikes

• Hardness and Strength: The high carbon content makes these spikes more resistant to bending or breaking under heavy loads, such as those exerted by freight trains or high-speed passenger trains.

• Longevity: The increased durability and wear resistance of high carbon steel mean that the spikes will last longer, reducing the need for frequent track maintenance and replacement.

• Resistance to Loosening: Due to the strength and hardness of the material, these spikes are less likely to loosen over time due to the vibrations from passing trains, ensuring that the track remains stable and aligned.

Applications of 5/8 HC Railroad Spikes

• Freight Rail Systems: Frequently used in heavy-duty freight systems, where the rail must withstand high levels of stress and wear.

• High-Speed Rail: Also used in high-speed rail systems, where stability and resistance to wear are critical.

• Commuter and Passenger Rail: Suitable for use in commuter rail or light rail systems, especially in systems with moderate traffic.

• Track Maintenance: Used for maintenance-of-way projects where rail replacement or re-spiking of wooden ties is necessary.

The 5/8 HC railroad spike is an essential component of the railway fastening system, particularly suited for wooden tie systems. Its high carbon content gives it superior strength, hardness, and resistance to wear, making it ideal for handling the significant dynamic loads and harsh conditions faced by railway tracks. Whether used in freight, passenger, or maintenance applications, it provides a durable, cost-effective, and reliable solution for ensuring track stability and safety.