SKL rail fastening system is one kind of hot rail fastening system among the railway materials market.
As for the components of SKL railway fastening system, including SKL rail clips, rail pad, screw spike, tie plate, washer, plastic dowel, track bolt and nuts, etc. common sizes of SKL rail fastening system include SKL 12, SKL 14 and SKL 3 rail fastening system.

| SKL tension clip | Ss35 screw spike | Flat washer | Plastic dowel | Guide plate | Rail pad | |
|---|---|---|---|---|---|---|
| Pieces required | 2 | 2 | 2 | 2 | 2 | 1 |
| Material | 60Si2CrA, 60Si2CrA, 38Si7 | Grade 4.6: Q235; Grade 5.6: 35# Grade 8.8: 45# | Q235 | HDPE, Reinforced Nylon 66 (PA66) | Reinforced Nylon 66 (PA66) | EVA, or rubber |
| Size | skl1,skl3,skl12,skl14 | M24×150mm | Uls7 | For different sizes of screw spike | UIC54, UIC60, 50kg rail, 60kg rail, and other sizes as ordered | |
| NOTE | Hardness: 42-47HRC 5 millions cycles without breaking. Standard: DIN17221, GB/T1222 | Standard: ISO898-1, UIC864-1 and NF F500-50 | Standard: EN10025, EN10139 | To insert into concrete sleeper | Customized products available. | |
screw dowel
Rail plastic dowel is also called rail plastic sleeve/plastic insert/concrete dowel/ concrete insert, which is a counter-party fastener for a screw spike or anchor bolt, and it is pre-imbedded into the concrete sleeper or wooden sleeper, installed together with screw spikes, guide plates and rail clips to fasten the rail tracks.

rail clip
Rail clip, or called elastic rail clip, is used to fasten steel rails to the underlying tie plate. Through bending and distortion, rail clip can put pressure on the rail, which prevents longitudinal movement of the rail, either from changes in temperature or through vibration.

screw spike
The screw spike is also known as rail screw. As one kind of Rail spike, it is a metal screw for fixing rail fasteners. Screw spike is usually made of NO.3 steel. Because its nail rod surface has thread, so it is called screw spike.

washer
Railway washer is used between fastenings and rail nuts, such as spikes and nuts, bolts and nuts, etc.

rail insulator
It is installed between steel rail and tie plate, for adjusting rail gauge and electrically insulating railroad rails, rail clips and rail bolts.

rail pad
Rail pads are elastic polyurethane mats which are interposed between steel rails and railway sleepers to protect the sleeper top from wearing and impacting.


