Railroad Screw Spike vs. Dog Spike
| Feature | Screw Spike | Dog Spike |
|---|---|---|
| Image | (Typically has threads and a square head) | (Smooth shank with a chisel point and "dog head") |
| Primary Function | To clamp the rail to the sleeper with high tension. | To hold the rail in place primarily through friction and shank resistance. |
| Holding Mechanism | Mechanical Interlock: Coarse threads bite into the sleeper material. | Friction & Deformation: Smooth shank deforms the wood fibers. |
| Shank Design | Partially Threaded (Lower portion has coarse threads). | Smooth (No threads). |
| Head Design | Square Head or Hex Head (for wrench tightening). | "Dog Head" (Flat, angled head for hammer striking). |

Product Description
|
Standard |
ASME, IFI, DIN, ISO and etc. |
|
Size |
Standard & non-standard, spport customized |
|
Material |
Carbon Steel, Stainless Steel and etc. |
|
Grade |
SAE J429 Gr.2, 5,8; ASTM A307Gr.A, Class 4.8, 5.8, 6.8, 8.8, 10.9, 12.9 and etc. |
|
Thread |
UNC,UNF |
|
Finish |
Plain, Zinc Plated(Clear/Blue/Yellow/Black), Black, H.D.G and etc. |
|
Packing |
Bulk in cartons on wood pallet or according to customer special demand. |
|
Application |
Structural Steel; Metal Buliding; Oil&Gas; Tower&Pole; Wind Energy; Mechanical Machine; Automobile: |

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