Ss25 Screw Spike With Uls7 Washer

The SS25 screw spike with ULS7 washer is a railway fastening component designed for securing rails to sleepers (ties) and is available from several specialized railway equipment manufacturers and suppliers. 

Product Information

The SS25 screw spike with ULS7 washer is a robust fastening system used in railway tracks, including high-speed lines. 

• Function: The system provides a secure and stable connection, minimizing track movement, and is used with a plastic dowel to fix tie plates or rail clips on concrete sleepers.

• Standards: The SS25 screw spike often refers to the UIC864-1 standard, while the mechanical properties can range from Grade 4.6, 5.6, to 8.8 and 10.9.

• Material: Common materials include carbon steel grades like Q235, 35#, or 45#.

• Dimensions: A typical size for the SS25 screw spike is M24x165mm (or 24x161), though other lengths are available.

Washer: The ULS7 is a flat washer typically made of materials like 65Mn or 60Si2Mn steel.

• Surface Finish: Various finishes are available to resist corrosion, including plain (oiled), oxide black, zinc plated, hot-dip galvanized (HDG), or Dacromet. 

Advantages

The SS25 screw spike with a ULS7 washer provides significant advantages over older fastening systems (such as traditional driven dog spikes or cut spikes) due to its engineered design, which offers superior performance, durability, and reduced maintenance needs.

• Superior Holding Power: The main advantage is the threaded design of the screw spike, which provides significantly greater grip and resistance to loosening. 

• Enhanced Stability and Safety: This prevents track deformation (twisting or sideways movement) that can occur under heavy stress.

• Reduced Maintenance and Longevity: The threaded engagement and use with a spring washer (like the ULS7) make the fastening less likely to work loose over time.

• Consistent Clamping Force (with ULS7 Washer): The ULS7 washer is a crucial component that provides a resilient "hold-down" force on the base plate.

• Versatility: The system is highly adaptable and can be used effectively with both traditional wooden sleepers and modern concrete ties, sometimes in combination with a plastic dowel for concrete applications.

• Corrosion Resistance: Modern SS25 screw spikes often feature advanced surface treatments like hot-dip galvanizing, Dacromet coating, or zinc plating, which offer superior resistance to corrosion in harsh environmental conditions compared to untreated iron spikes. 

Lifespan

The SS25 screw spike with a ULS7 washer is designed for an extended service life, typically expected to last for several decades when made from high-quality materials and properly maintained. 

Get in Touch with Us

If you're looking for a reliable, high-quality solution for your railway fastening needs, look no further than the M24 screw spike. Contact us today to learn more about how our M24 screw spikes can help improve the security, stability, and efficiency of your railway infrastructure.

Contact Details:

Phone: +86 512 50353196

Email: admin@rail-fastening.com

Website: www.rail-fastening.com

Address: 120 Tongjing Road, Lujia Town, Kunshan, Jiangsu 215331, China