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The Ss35 sleeper screw (specifically the Ss35-161 variant) is a critical component of the Vossloh W30 fastening system used in heavy-haul railway tracks. It is a high-strength threaded fastener that is used to secure the rail components to the concrete sleeper, usually in conjunction with a plastic dowel and a washer.
Key Specifications
Key Specifications
Type: The exact specification for the W30 system is the Ss35-161 screw spike.
Dimensions: According to railways-fasteners.com and railsfastener.com, the typical dimensions are M24x160mm or M24x161mm.
Material and Grade: It is made from high-strength steel, with material grades often specified as Grade 5.6 or Grade 8.8.
Head Style: It typically features a square or hexagonal head for easy installation and removal.
Standards: The screw spike is manufactured to meet stringent industry standards, including ISO898-1, UIC864-1, and NF F500-50.
Corrosion Protection: Various surface finishes are available, such as plain oiled, oxide black, zinc plated, hot-dip galvanized (HDG), Dacromet, or sherardizing, to ensure durability and resistance to environmental conditions.
Usage in the W30 System
Usage in the W30 System
In the complete W30 system for each sleeper, four Ss35-161 screw spikes are used. They work in conjunction with other components:
Four SKL30 rail clips
Four UIs7 flat washers
Four SDU25 plastic dowels (inserted into the concrete sleeper)
Four Wfp30K-12hh guide plates
Two rail pads
The SS35 sleeper screw is a crucial component of the Vossloh W30 fastening system, providing reliable track stability, alignment, and safety in railway infrastructure. Its ability to securely fasten the rail to the concrete tie, while offering vibration resistance, corrosion protection, and long-term durability, makes it ideal for heavy-duty rail applications, including high-speed and freight rail systems.
If you're looking for a reliable and durable rail fastening solution, the SS35 sleeper screw is an excellent choice. For more information or to place an order, please contact us today. We can help you ensure the performance and safety of your rail systems.
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