A rail screw spike, also known as a sleeper screw or railway screw spike, is a type of rail fastener used to fix steel rails firmly to railway sleepers (ties). Unlike traditional dog spikes that are hammered into the sleeper, rail screw spikes are screwed in, providing a stronger clamping force, higher resistance to loosening, and better long-term stability.
Rail screw spikes are designed with coarse threads that bite deeply into wooden or pre-inserted plastic dowels in concrete sleepers. This threaded engagement gives them excellent pull-out resistance and makes them suitable for high-speed, heavy-haul, and urban rail systems.
The materials used for rail screw spikes typically include carbon steel or alloy steel, such as Grade 4.6, 5.6, or 8.8 to UIC864-1 or ASTM standards, ensuring durability and mechanical strength. Their surface finishes-like plain oiled, hot-dip galvanized, or zinc plated-enhance corrosion resistance and extend service life, especially in harsh or coastal environments.
Rail screw spikes come in various sizes and types, such as Ss series (e.g., Ss8, Ss25), CS screw spikes, or DHS types, each designed for specific rail profiles and sleeper materials. They are commonly used together with other components in a rail fastening system, including tie plates, rail pads, insulators, and spring washers, to maintain proper track gauge and ensure safe, smooth train operation.
| No. | Product Name | Specification | Material | Surface | Standard | |
| 1 | Fishtail Bolt | M8-M64 | Q235,45#,55#,etc | Zinc,Plain, Black Oil | UIC,AREMA,JIS,GB or according to your requests. | |
| 2 | Screw Spike | Square Head Screw Spike | M16-M22 *145-200 | |||
| Hexagon Head Screw Spike | ||||||
| Other Types | ||||||
| Type | Specification | Weight/kg | Surface | Standard | ||
| 3 | Sleeper Screw | Ss 1/130 | M22*130 | 0.451 | Zinc,Plain, Black Oil | UIC,AREMA,JIS,GB or according to your requests. |
| Ss 1/150 | M22*150 | 0.478 | ||||
| Ss 2/180 | M22*180 | 0.595 | ||||
| Ss 5/150 | M24*150 | 0.545 | ||||
| Ss 6/130 | M26*130 | 0.658 | ||||
| Ss 6/150 | M26*150 | 0.702 | ||||
| Ss 6/170 | M26*170 | 0.385 | ||||
| Ss 7/180 | M24*180 | 0.636 | ||||
| Ss 8/140 | M24*140 | 0.528 | ||||
| Ss 8/150 | M24*150 | 0.548 | ||||
| Ss 8/160 | M24*160 | 0.568 | ||||
| Ss 23/160 | M23*160 | 0.645 | ||||
| Ss 24/165 | M24*165 | 0.59 | ||||
| Ss 25/165 | M25*165 | 0.625 | ||||
Companies like GNEE RAIL supply a full range of rail screw spikes conforming to UIC, AREMA, and BS standards, offering customized sizes, coating options, and technical installation support for different railway infrastructure projects worldwide.