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.
Ss25 Rail screw spike, also called Ss25 sleeper screw, Ss25 rail screw or Ss25 lag bolt, is a medium or large metal screw used to fasten a rail base plate or rail. Ss25 rail screw spike provides a mechanical interlock that delivers more than twice the holding power of conventional hammered rail spikes. Ss25 Rail Spike is used to fix the tie plate or fasten the rail to the concrete sleeper with the help of plastic dowel. Usually, it is with a ULS7 washer to fasten a tie plate or wood sleeper. The weight of Ss25 screw spike is 0.635KG.
RAW MATERIAL
Ss25 Screw spike is usually made of Q235,35#,45# steel in China. As its nail rod surface has thread, it get its name as screw spike. The pull-out resistance is 0.5 ~ 1.0 times larger than that of common rail spike, but the thrust resistance is 50% less.
| Item Name | Railway Screw Spike | |||
| Type | Ss5.-150 | V20-135 | ||
| Ss8-140 | V23-115 | |||
| Ss8-150 | V23-135 | |||
| Ss8-160 | V23-155 | |||
| Ss23-160 | V23-215 | |||
| Ss25.-165 | V26-115 | |||
| Ss35.-161 | ||||
| Or the type by customers' drawings | ||||
| Grade | 4.6 | 5.6 | 8.8 | 10.9 |
| Material | Q235 | 35# | 45# | 40Cr |
| Mechanical properties | Tensile strength: ≥400Mpa | Tensile strength:≥500Mpa | Tensile strength:≥800Mpa | Tensile strength:≥1000Mpa |
| Yield strength:≥240Mpa | Yield strength:≥300Mpa | Yield strength:≥640Mpa | Yield strength:≥900Mpa | |
| Elongation:≥22% | Elongation:≥20% | Elongation:≥12% | Elongation:≥9% | |
| Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | Cold bending: 90 degree without crack | |
| Surface | plain (oiled), Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing | |||
| Standard refers | ISO898-1, UIC864-1, and NF F500-50 | |||
SURFACE TREATMENT
PLain oiled, Blasted oiled, Oxide black, Zinc plated, HDG, Dacromet, Sherardizing or according to requirements of customer.
Drawing and Weight of Ss25 Screw Spike
- Standard: Vossloh
- Material & Grade: Grade 4.6 of material Q235, Grade 5.6 of material 35K, Grade 8.8 of material 45#, Grade 10.9 of material 40Cr.
- Properties:
Tensile: 74,000 PSI MIN
Yield: 37,000 PSI MIN
Elongation: 18% MIN
The size of screw spike Ss25 is M24x161mm. The weight of screw spike Ss25 with Uls7 washer is 0.635kg.
FIX POWER
Ss25 rail screw spike requires higher cost than the dog spike. But it has the advantage of greater fixing power; approximately twice than a rail spike, and can be used in combination with spring washers. Its properties is usually as below:
- Tensile: 74,000 PSI MIN
- Yield: 37,000 PSI MIN
- Elongation: 18% MIN
For some high tension screw spike,its properties are able to be following:
- Tensile: 120,000 PSI MIN
- Yield: 80,000 PSI MIN
- Elongation: 18% MIN
GNEE RAIL offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, Rail Screw Spike, Plastic Dowel, High Tensile Track Bolt with Nut, Rail Base(Tie) Plate, Rail Fish Plate, Railway Shoulder(Insert), Fish Bolt, Railroad Rubber and EVA Pad, etc. Samples and drawings provided by customer, we will manufacture qualified products accordingly.
