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An SS5 screw spike is a type of large, threaded fastener used in railway track construction to secure steel baseplates and rails to wooden or concrete sleepers (ties). It provides greater holding power compared to traditional hammered rail spikes.
Key Features and Specifications
Key Features and Specifications
Function: The primary function is to firmly fix rails and ensure standard track spacing, providing stability, and effectively resisting vibrations and impacts from passing trains.
Material: Typically made from high-quality carbon steel (Q235, 35#, 45#) or alloy steel, often with heat treatment to enhance durability and strength.
Dimensions: A common specification is the Ss5-150, which measures M24 x 150 mm.
Head Style: Screw spikes commonly feature a square or hexagonal head, designed for installation and removal using specialized tools like hydraulic wrenches.
Surface Treatment: To resist corrosion, they can have various finishes, including plain (oiled), black oxide, zinc plating, or hot-dip galvanizing (HDG).
Standards: Manufacturing and use often adhere to international standards such as UIC, AREMA, JIS, and GB.
Usage and Application
Usage and Application
With Wooden Sleepers: The SS5 screw spike is screwed directly into pre-drilled holes in wooden ties to fasten the base plate or sole plate.
With Concrete Sleepers: When used with concrete sleepers, the spike is inserted into a pre-pressed plastic dowel (ferrule) cast into the concrete to ensure a secure fit and strong clamping force.
Maintenance: The threaded design facilitates easier installation and removal during routine maintenance or replacement compared to hammered spikes, improving overall repair efficiency.
SS5 screw spikes typically come in sizes like 5/8" x 6" or 5/8" x 7", but custom sizes are available based on specific project needs.
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