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China Rail Bolts Factory - High Strength, Anti-Corrosion Fasteners from Leading Suppliers Complying with EU EN 13481 & US AREMA Standards
Basic Information & Overview
These bolts serve as core load-bearing fastening components for EU and US standard-compliant rail fastening systems. Tasked with securing elastic clips, base plates, and related hardware firmly to concrete or wooden sleepers, they maintain stable, enduring clamping force across the fastening assembly under continuous dynamic train operations.
EU Standard Compliance
Conforms to EN 13481 and EN 14399 specifications. Manufactured from Grade 8.8 / 10.9 high-strength alloy steel with M16–M24 standard threads. Suitable for 350 km/h high-speed rail and 25t axle-load heavy-haul lines, fully compatible with Pandrol Fastclip and Vossloh SKL systems.
North American Compliance
Engineered to AREMA Chapter 5 regulations utilizing Grade 5 / Grade 8 carbon steel. Optimized for 40t axle-load heavy-haul freight networks with standardized threading matching AREMA tie plates and pre-embedded sleeve dimensions.
Corrosion & Extreme Weather
Protected by Dacromet or Hot-Dip Galvanized surface finishes. Verified by 1200+ hour neutral salt spray tests, delivering dependable structural performance across harsh ambient conditions ranging from -40°C to 80°C.
Anti-Loosening & Insulation
Features nylon insert and crimped point anti-loosening designs, verified through 3 million vibration cycles without loss of preload. Insulated variants provide ≥10MΩ insulation resistance to prevent signal interference; custom sizing available.
Key Specifications Overview
| Regional Standard | Applicable Grades | Thread Specifications | Load & Application | Compatible Systems |
|---|---|---|---|---|
| EU Standard (EN 13481 / EN 14399) | Grade 8.8 / Grade 10.9 High-Strength Alloy Steel | M16 to M24 | 350 km/h HSR & 25t Heavy-Haul | Pandrol Fastclip, Vossloh SKL |
| US Standard (AREMA Chapter 5) | Grade 5 / Grade 8 Carbon Steel | AREMA Unified Standard Dimensions | 40t Axle-Load Freight Lines | AREMA Tie Plates & Pre-embedded Sleeves |
Frequently Asked Questions
What rail fastening systems are these bolts compatible with under EU standards?
Under EU specifications (EN 13481 and EN 14399), these bolts are fully compatible with mainstream Pandrol Fastclip and Vossloh SKL rail fastening systems, supporting high-speed lines up to 350 km/h as well as 25t axle-load heavy-haul lines.
What grades and specifications are available for North American AREMA requirements?
For North American markets complying with AREMA Chapter 5, Grade 5 and Grade 8 carbon steel bolts are provided. They feature unified thread specifications designed to fit AREMA standard tie plates and pre-embedded sleeve dimensions for 40t axle-load heavy-haul freight systems.
What anti-corrosion coatings are used and what temperature range can they withstand?
The products utilize Dacromet or Hot-Dip Galvanized anti-corrosion coatings. Both have passed 1200+ hour neutral salt spray tests, making them resilient to extreme operational temperatures ranging from -40℃ to 80℃.
How do these fastening bolts prevent loosening under dynamic train loads?
Anti-loosening mechanisms such as nylon inserts and crimped points are integrated. These designs have proven their reliability by passing 3 million vibration cycle tests without loosening to maintain clamping force and operational safety.
Are insulated coatings offered for signaling protection?
Yes, insulated coating versions are available specifically for high-speed rail and urban transit lines. They provide ≥10MΩ insulation resistance to prevent interference with railway signal networks.
Can custom dimensions and thread specifications be produced?
Yes, custom sizes, lengths, and specialized thread specifications can be provided to meet unique railway track engineering and project demands.