A rail screw spike, also called sleeper screw, rail screw or lag bolt, is a medium or large metal screw used to fasten a rail base plate or rail. Such spikes are always fastened into holes bored into the tie sleeper, sometimes together with imbedded plastic dowels, popularly used for rails with wooden sleepers, especially in America and Canada.
Ss35 Rail screw spike, also called Ss35 sleeper screw, Ss35 rail screw or Ss35 lag bolt, is a medium or large metal screw used to fasten a rail base plate or rail. Ss35 rail screw spike provides a mechanical interlock that delivers more than twice the holding power of conventional hammered rail spikes. It is an important fastener of W14 Rail Fastening System. Ss35 Rail Spike is used to fix the tie plate or fasten the rail to the concrete sleeper with the help of Sdu25 plastic dowel. It has a very similar one called DHS35 Sleeper Screw Spike. The difference between Ss35 Screw Spike and DHS35 Screw Spike is the shape of the head. Ss35 Screw Spike has a square head and the other has a tapered head.
RAW MATERIAL
Ss35 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 Ss35 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
FIX POWER
Ss35 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 can supply various standards of railway screw spikes manufactured with international standards, such as BS, ATM, DIN and so on. GNEE has extensive experience in the rail industry and a high level of expertise in this specialized field. Any quantity is viable, big or small. And we can offer a range of finishes including hot dipped galvanized, black, sherardized or self color for the budget conscious.
