Durable Spiral Road Stud for Enhanced Railway Safety and Visibility

• Customization: Available
• After-sales Service: One Year
• Warranty: One Year
• Customized: Railway Tools
• Certification: ISO9001
• Type: Railway Tools
• Transport Package: Export Wooden Box
• Origin: Handan, Hebei Province, China
• Production Capacity: 10000

Product Description

Railway screw nails are a type of key fastener specifically used to fix rails and sleepers. Their main functions include:
Rail anchoring
Firmly fix the rails to wooden sleepers or concrete sleepers to prevent longitudinal crawling or lateral displacement of the rails.
2. Withstand dynamic loads
Resist the vertical pressure, lateral impact force and longitudinal friction force generated when the train passes.
3. Insulation protection
Some screw nails are equipped with insulating sleeves for the electrified sections to prevent short circuits in the track circuits.
4. Convenient for adjustment and maintenance
Compared with traditional road studs, the spiral structure is easier to tighten or disassemble and is suitable for sections that require frequent maintenance.

 

Screw nails are widely used in the following railway scenarios:


Wooden pillow line: It replaces traditional road studs, providing stronger uplift resistance and preventing the wooden pillow from cracking.
Concrete track: Used in conjunction with embedded sleeves, it meets the qualitative requirements of ballastless track.
Turnout section: Strengthen the fixation at key parts such as the pointed rail and basic rail to resist the stress caused by frequent changes.
Bridges and tunnels: Vibration-resistant design, suitable for the expansion and contraction of Bridges and the humid environment inside tunnels.
Electrified railways: Insulated spiral nails (such as those wrapped in nylon) are used in automatic block sections to ensure that signal transmission is not disturbed.
Heavy-haul railway: Made of high-strength alloy steel, it can withstand the repeated impact of large axle load trains.

 

Technical parameters and key points for selection
Thread specifications: Commonly M22, M24, pitch 4 to 5mm.
Uplift resistance: Generally, it should be ≥60kN (higher requirements for heavy-haul railways).
Anti-corrosion treatment: galvanization, Dacromet coating or carburizing process.
Insulation resistance: The electrified section is required to be ≥10Ω (500V DC).

 

Railway screw studs provide anchoring force far exceeding that of traditional track studs through mechanical interlocking of threads and are indispensable components of modern track structures. Selection should comprehensively consider the type of circuit, environmental corrosiveness, and electrical insulation requirements, and strictly follow the torque standard for installation. In the future, with the popularization of intelligent monitoring technology,