The NABLA C1 Fastening System is a robust, standard railway component used to securely attach rails to sleepers (ties), providing essential stability, vibration dampening, and precise alignment for heavy loads and high-speed trains. It's a type of elastic fastening system, featuring the distinct NABLA C1 clip (a spring steel fastener), insulators (guide plates), rail pads, anchor screws, and washers, designed for reliable performance and easier maintenance on various track types, from metros to high-speed lines. [...]
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What are the main differences between Nabla RNTS and RNTC?
The main differences between the Nabla RNTS and Nabla RNTC rail fastening systems center on the type of sleeper they support and their internal assembly components. Both are classic STEDEF (Sonneville) fastening systems designed for noise and vibration reduction.
While both are STEDEF fasteners, the RNTS is used for flat sleepers and requires a cast-iron base plate, whereas the RNTC is designed for profiled (sloped) sleepers and typically uses rail insulators directly.[...]
China has announced the production and supply of the SS35 sleep screw, a high-quality fastening solution designed for modern railway infrastructure. Manufactured with precision and adhering to rigorous quality standards, the SS35 sleep screw is tailored for durability, safety, and efficiency in rail construction and maintenance.
The SS35 sleep screw features superior corrosion resistance and enhanced mechanical performance, ensuring long-term stability for railway sleepers under heavy load conditions. [...]
A railway lag screw (also known as a screw spike, sleeper screw, or rail screw) is a heavy-duty metal fastener used to secure railroad tie plates or rails directly to wooden or concrete sleepers. Unlike traditional rail spikes, which are hammered in, lag screws are screwed into pre-drilled holes, providing approximately twice the fixing power and greater resistance to loosening from vibrations.
Usually has a hexagonal or square head, allowing it to be tightened with a wrench or socket driver to apply high torque. [...]
Railway lag screws, also known as sleeper screws or rail screws, are heavy-duty fasteners (often 6 inches long) used to secure rail base plates to wooden sleepers (ties), providing superior holding power compared to traditional spikes. These high-strength, often galvanized screws are installed into pre-bored holes, sometimes with plastic dowels, and come in square, hexagon, or double-head designs.
Typically manufactured in large sizes, with diameters ranging from 3/8 to 3/4 inches and lengths up to 20 inches. Common railroad sizes include 15/16 x 6-1/2 inches.[...]
Rail lag screws, also known as sleeper screws or rail screws, are heavy-duty fasteners used to secure rail base plates or directly fasten rails to wooden or concrete sleepers, providing superior holding power compared to traditional spikes.
Material & Standards: Usually made of carbon steel (Q235) or alloy steel (grade 5.6, 8.8), conforming to standards like ISO898-1, UIC864-1, BS, and DIN.
Application: Used for wooden sleepers, or in combination with plastic dowels for concrete sleepers.[...]
A railway 3V screw spike (also known as a 3V sleeper screw) is a specialized threaded fastener used to secure railway rails or baseplates to sleepers (ties). It is designed to provide significantly higher holding power—approximately twice that of a standard dog spike—to prevent vertical and lateral rail movement.
Specific Models: V20-135, V23-115, V23-135, V23-155, V23-215, and V26-115.
Material Grades: Typically produced in grades 4.6, 5.6, and 8.8.
Surface Treatments: Options include plain oiled, black oxide, zinc plated, hot-dip galvanized (HDG), and Dacromet.[...]
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