Dog spikes rely on hammering to embed them into sleepers and depend on friction for fixation. This design performs adequately in dry environments, but in humid or rainy areas, wooden sleepers are prone to expansion and deformation, leading to spike loosening.
| 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 |
Screw spikes feature a helical thread design and are implanted into sleepers through rotation. The threads mechanically interlock with the wood, increasing pull-out resistance by approximately 40% compared to straight-shank spikes. The spiral structure allows adaptation to the swelling and shrinking of wood due to moisture changes, reducing the risk of loosening caused by environmental variations.
| Type | Ss5, Ss 8, Ss25, Ss36, UIC864-1 Series, etc |
| Raw material | Q235, 35 steel, 45steel, 40Mn2, 20 Mn Si |
| Grade | 4.6, 4.8, 5.6, 8.8 |
| Surface | plain(oiled), black paint, color paint, zinc, HDG, etc |
Ss series Sleeper Screw
| Type | Specification | Weight/kg | Surface | Standard |
| Ss 1/130 | M22*130 | 0.451 | Natural,Zinc,Paint,Oil. According to your needs. | UIC,AREMA,GB or According to your drawings or samples. |
| Ss 1/150 | M22*150 | 0.478 | ||
| Ss 2/180 | M22*150 | 0.595 | ||
| Ss 5/150 | M24*150 | 0.545 | ||
| Ss 6/150 | M26*150 | 0.702 | ||
| Ss 7/180 | M24*180 | 0.636 | ||
| Ss 8/140 | M24*140 | 0.528 | ||
| Ss 8/150 | M24*150 | 0.548 |
Square head screw spike
| Type | Specification | Material | Surface | Standard |
| Square head screw spike | M22*145 | 45# | Natural | UIC |
| 55Q | Zinc | AREMA | ||
| M22*155 | Q235 | Paint | DIN | |
| M22*165 | or | Oil | GB | |
| M22*185 | According to your needs. | According to your needs. | or | |
| M22*195 | According to your drawings or samples. | |||
| Other kinds |
Hexagon screw spike
| Grade | 4.6 | 5 .6 | 8.8 | 10.9 |
| Material | Q235 | 35# | 45# | 40Cr |
| Mechanical | 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 | Cold bending: 90 degree | Cold bending: 90 degree | Cold bending: 90 degree | |
| without crack | without crack | without crack | without crack | |
| Surface | plain (oiled) , Oxide black, Zinc, HDG, wax, bitumen, Dacromet, Sherardizing | |||
Compared to dog spikes, screw spikes offer the following significant advantages:
(1)Stronger Pull-Out Resistance
The helical grooves increase the contact area with soil or base materials, dispersing pressure under force and preventing loosening due to external pulling. This makes them particularly suitable for soft soil or scenarios requiring long-term stability, such as railway sleeper fixation and fence installation.
(2)Easy Installation
Screw spikes can be installed using specialized tools or common power drills, with some models even allowing direct hammer-driven insertion. Compared to expansion bolts requiring pre-drilling, their construction efficiency is higher, making them ideal for large-scale projects.
(3)Wide Adaptability
Whether in sandy soil, clay, or gravel foundations, screw spikes can adapt by adjusting groove depth and material. They can also be used with base materials such as wood and concrete, offering highly flexible applications.
(4)Eco-Friendly and Durable
Screw spikes are reusable and require no chemical adhesives, reducing environmental pollution. Their anti-corrosion treatments also extend service life and lower maintenance costs.
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.
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