Ss series Sleeper Screw vs Rail Square Head Screws Spike

A rail spike is a fastening unit that establishes rigid contact between rail and sleeper, ensuring rail stability, preserving track gauge, and preventing movement under traffic and environmental stress. Its mechanical strength and corrosion resistance are critical for long service life. GNEE RAIL supplies spikes matching GB light and heavy rail systems, UIC profiles, DIN536 crane rails, QU series rails, JIS rails, AS1085 rails, BS11 sections, and AREMA/ASCE standards.

Ss series Sleeper Screw vs Rail Square Head Screws Spike

Ss series sleeper screws and rail square head screws (both types of screw spikes) are specialized, threaded fasteners primarily used to secure rail tie plates to wood or concrete sleepers, providing superior fastening power (often double) compared to traditional dog spikes. Ss series screws are standardized (e.g., M22, M24) and commonly used with plastic dowels, while square head spikes are a general category of screw fastener.

Key Comparisons:

• Fastening Mechanism: Both Ss series and square head screws use threads to grip the sleeper, often used with elastic rail clips or plastic dowels (inserted into concrete).

• Ss Series Characteristics: These are standardized high-strength steel screws (e.g., Ss 1/130, Ss 5/150, Ss 8/150) featuring a specific thread profile, diameter (typically M22–M26), and head design, frequently used in high-speed or heavy-haul lines.

• Square Head Screws: A broader classification of rail screws that can include various standards (e.g., DIN, AREMA) and, as the name suggests, a four-sided driving head for installation and removal.

• Application: Both are used for wooden or concrete sleepers to fix rails or bearing plates. They offer higher maintenance stability compared to traditional nails.

• Advantages over Traditional Spikes: Screw spikes provide better fastening, are suitable for automatic installation/removal, and can be used with elastic systems to prevent rail gauge widening, although they have a higher manufacturing cost than conventional dog spikes.

Key Differences Summarized:

• Ss Series: Highly standardized European/international specification.

• Square Head: A more general, functional description of the head type for a screw spike.

How to choose the appropriate rail screw spike type?

Choosing the appropriate rail screw spike involves matching the spike's material strength, dimensions, and coating to the specific sleeper type (wood or concrete), rail load, and environmental conditions (corrosion risk). Key factors include selecting based on head type (square, hexagon, or double-head), diameter (16-22mm), and length (120-200mm) to ensure maximum holding power and durability.

Key Selection Factors:

Sleeper Type & Material:

• Wood Ties: Typically use large, robust screw spikes (often 5-7 inches) that, unlike cut spikes, provide higher hold-down force.

• Concrete/Concrete Sleeper: Require specific screw spikes usually installed with embedded plastic dowels to prevent damage to the concrete.

• Environmental Conditions: In coastal, damp, or harsh climates, choose hot-dip galvanized, high-carbon steel spikes to prevent corrosion and extend life.

• Load & Traffic Type: High-traffic lines with heavy loads require higher-strength steel (e.g., 45#, 50#, 60# steel) to withstand vibration.

• Dimensions & Specifications: Match the diameter (e.g., 16mm, 18mm, 20mm, 22mm) and length (120-200mm) precisely to the rail base and sleeper thickness.

Head Type:

• Ss Series Sleeper Screw: Commonly used with specific railway fasteners.

• Square/Hexagon Head: Selected based on the installation machinery available (manual vs. machine-driven).

• Double-Head: Offers specialized fastening.

• Security Needs: For areas with high theft/vandalism risk, choose anti-theft designs that require specialized tools for removal.

Rail spike, one of the products of GNEE RAIL , is used to connect the steel rail with rail sleeper or bind the rail plate and rail sleeper together.As a professional rail fasteners supplier,GNEE RAIL offers different kinds of railway fasteners to meet client's requirements, such as Elastic Rail Clip and Clamp, 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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