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What's the difference between railway dog spike and screw spike?
The main difference is that a dog spike has a square shank and a pointed head, while a screw spike has a threaded shank and a smooth, flat head. This means screw spikes have a significantly greater holding power, making them ideal for heavy-duty applications, while dog spikes are a simpler, more traditional fastening method for wooden sleepers.
Head: L-shaped or "dog's head" with a sloped underside.
Shank: Square and smooth.
Function: Driven into wooden sleepers to fasten rails and tie plates.
Holding Power: Lower holding power compared to screw spikes.
| Specification | Material | Surface | Standard |
|---|---|---|---|
| 5/8×6 '' | A3,Q235, 45#,55#, etc | According to customer needs. | According to customer's drawings or samples. |
| 9/16×5-1/2 '' | |||
| 3/8''×3-1/2 '' | |||
| 1/2×3-1/2 | |||
| Other kinds |
Steel Material Chemical Composition and Mechanical Properties:
| C | Mn | Si | P | S |
|---|---|---|---|---|
| 0.17 - 0.25% | 0.9 - 1.35% | 0.35 Max | 0.04% Max | 0.05 Max |
| Tensile Strength | Yield Strength | Elongation | Reduction of Area | Hardness |
|---|---|---|---|---|
| 120,000psi(min) | 92,000psi(min) | 14%(min) | 35%(min) | HRC22-HRC32 |
- Head: Typically flat with a square or hexagonal shape for a wrench.
- Shank: Helical thread.
- Function: Screwed into a wooden sleeper or a plastic sleeve in a concrete sleeper to fasten rails.
- Holding Power: Greater holding power, often more than double that of a dog spike.
- Application: Used in areas with heavy vibration or where maximum stability is needed.
| the types of Ss Series Sleeper Screw | 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 | ||||
Comparison of dog spikes and screw spikes
Surface
The screw spikes are the railroad spikes with the screw thread on the surface. But as to the dog spikes, it has a pointed penetrating head with a smooth suface.
Power
As to the holding power, the screw spikes can provide more than twice of the power than the dog spikes.
Cost
Because of the greater fixing power and the feature that can be combined with spring washers, the cost of manufacture of the screw spike is higher than the dog spikes or dog nails.
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.
