Railway Fish Bolt | Heavy-Duty Rail Joint Solutions

Railway Fish Bolt - Engineered for Heavy-Duty Rail Joints & Global OEM Projects

Technical Introduction

The Railway Fish Bolt - also known as Rail Joint Bolt or Fishplate Bolt - is the critical fastening component that secures two rail ends together via fishplates, ensuring seamless load transfer and track continuity under dynamic train loads. Unlike standard bolts, our fish bolts are engineered for extreme tensile strength, fatigue resistance, and long-term corrosion protection - essential for maintaining joint integrity in heavy-haul, high-speed, and metro rail systems.

Designed to meet EN 14399, UIC 864, AREMA, and JIS E 1101 standards, our fish bolts are trusted by rail authorities and OEM contractors across Asia, Europe, and the Middle East.

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Material & Technical Specifications

Our Railway Fish Bolts are forged from premium alloy steel (Grade 35VB, 45# or 10.9/12.9 Class), with precision threading and optional surface treatments to withstand decades of vibration, moisture, and chemical exposure. Custom geometries and torque specs available for OEM integration.

Technical Parameters of QL Railway Fish Bolt

Property	Standard Value	Customizable Range
Material	35VB Alloy Steel	45#, 42CrMo, B7, Client Spec
Strength Class	10.9 (ISO 898-1)	8.8, 12.9, Custom Torque
Diameter	M24, M27	M20 to M36
Length	160mm, 180mm	120–300mm
Coating	Zinc Flake (Standard)	HDG, Dacromet, Geomet, Color ID
Compliance	EN 14399, UIC 864	AREMA, JIS, GOST, Client Drawing

Global Applications by Rail Type

Railway Fish Bolts are indispensable wherever rail joints exist - from legacy networks to modern high-speed lines undergoing phased upgrades. Our bolts perform reliably in:

🚄 High-Speed Rail (HSR) - Maintains joint rigidity under 300+ km/h dynamic loads.
🚛 Heavy-Haul Freight Corridors - Resists fatigue from 30+ tonne axle loads and frequent braking.
🚇 Urban Metro & Light Rail - Minimizes noise and micro-movement in densely populated zones.
🔄 Track Renewal & Maintenance - Direct replacement for worn or corroded bolts; no sleeper modification needed.
🌍 Extreme Environments - Salt spray (coastal), desert heat, sub-zero cold - coatings engineered for surviva

OEM & ODM Customization Capabilities

As a certified OEM manufacturer, we don't just sell fish bolts - we co-develop rail joint solutions that integrate perfectly with your system, branding, and logistics needs.

✅ What We Customize:

Dimensions & Threading - Match existing fishplates or design new joint interfaces.
Material & Strength Class - From standard 8.8 to ultra-high 12.9 for extreme stress zones.
Surface Treatment - Color-coded coatings (e.g., blue for metro, yellow for warning zones) for visual ID and corrosion control.
Head Marking & Branding - Laser-engraved logos, strength class, batch code, QR traceability.
Packaging & Kitting - Bulk, per-joint kits with washers/nuts, labeled by project section.

→ Submit your drawing, sample, or specification. We deliver prototype samples within 15 working days.

Installation & Compatibility

Our fish bolts are designed for compatibility with:

Standard fishplates: UIC 60, BS 113A, AREMA, JIS, and custom profiles
Joint types: Insulated, glued, conventional, and expansion joints
Installation tools: Manual torque wrenches, pneumatic impact guns, hydraulic tensioners

Proper torque application (typically 300–500 N·m) ensures optimal clamping force without thread stripping. We provide torque specs and installation guides with every order.