China Rail Nut & Washer Suppliers | High-Performance Factory Fasteners Complying with EU EN 13481 & US AREMA Standards
Basic Information
Global Standards
Grade 8.8/10.9 (EN 14399) & AREMA Chapter 5 compliant.
Extreme Protection
Dacromet or HDG coating, 1000+ hour salt spray resistance.
Signal Integrity
Nylon-coated insulation providing ≥10MΩ resistance.
Heavy Haul
Designed for up to 40t axle loads and 3M vibration cycles.
These nuts and washers are critical fastening components in standard-compliant rail fastening systems, tasked with securing elastic clips, base plates and other parts to sleepers, maintaining stable clamping force on rails under long-term dynamic load from trains.
Insulated nylon-coated or full polymer washers are also available for high-speed rail and urban transit lines, providing ≥10MΩ insulation resistance to avoid railway signal interference. All products undergo strict anti-corrosion treatment, including dacromet or hot-dip galvanized coating, passing 1000+ hour neutral salt spray tests to adapt to extreme weather conditions from -40℃ to 80℃.
Anti-loosening designs such as nylon insert and crimped point are adopted for nuts, passing 3 million vibration cycle tests without loosening to ensure operation safety. They are fully compatible with mainstream Pandrol Fastclip, Vossloh SKL and AREMA tie plate fastening systems, with customizable specifications to fit different anchor bolt sizes.