- Description
-
Key Attributes
Specification
Fish bolts, also known as rail joint bolts or fishplate bolts, are critical components in railway infrastructure, designed to securely fasten rail joints and ensure seamless track alignment. These specialized bolts work in tandem with fish plates (splice bars) to maintain the integrity of rail systems under heavy loads, vibrations, and environmental stressors. This article explores the importance of high-quality fish bolts, their technical specifications, and applications in modern rail networks.
Key Features of Industrial Fish Bolts
Robust Material Construction
High-Tensile Carbon Steel: Grade 10.9 fish bolts offer exceptional load-bearing capacity (up to 1,040 MPa tensile strength), essential for supporting heavy freight and passenger trains.
Corrosion Resistance: Hot-dip galvanized or electro-galvanized coatings protect against rust, moisture, and chemical exposure, extending service life in harsh environments like coastal or mining areas.
Precision Engineering
Fish bolts are machined to exact dimensions (e.g., DIN 933, ISO 4014) to ensure compatibility with standard fish plates and rail joints.
Threads are rolled, not cut, to enhance durability and fatigue resistance under dynamic loads.
Compliance with International Standards
ASTM A183: Certifies suitability for railway track applications.
ISO 9001 & RoHS: Guarantees quality control and environmental safety.
Applications of Fish Bolts in Rail Infrastructure
Mainline Railways
Secure joints on high-speed and heavy-haul tracks, minimizing gaps and preventing rail misalignment.
Mining & Industrial Tracks
Reinforce tracks for mining carts, cranes, and industrial machinery subjected to extreme loads.
Bridge & Tunnel Construction
Stabilize rail sections on steel bridges and in tunnels where temperature fluctuations cause expansion/contraction.
Urban Transit Systems
Ensure safety and stability in metro, tram, and light-rail networks.
Advantages of Choosing Premium Fish Bolts
✅ Extended Lifespan: Galvanized coatings reduce maintenance costs by resisting wear and corrosion.
✅ Vibration Resistance: Precision threads and torque control prevent loosening under constant train movement.
✅ Customization: Available in sizes from M20 to M36 with tailored lengths and thread pitches.
✅ Safety Compliance: ASTM A183 certification ensures reliability in critical rail infrastructure projects.Technical Specifications
Material: Grade 10.9 Carbon Steel / 304/316 Stainless Steel (Optional)
Finish: Hot-Dip Galvanized (Minimum 85μm Coating) / Electro-Galvanized
Standards: ASTM A183, DIN 933, ISO 4014
Diameter: M20, M24, M30, M36 (Custom Sizes Available)
Length: 60mm to 300mm
Certifications: ISO 9001, RoHS, REACH
Why Partner with a Trusted Fish Bolt Supplier?
20+ Years of Expertise: Proven experience in railway fastener manufacturing.
Bulk Order Capability: MOQs as low as 1,000 units with competitive pricing.
Quality Assurance: 100% pre-shipment testing and 5-year warranty against defects.
Global Logistics: Fast delivery via sea or air freight with FOB/CIF terms.
Conclusion
Fish bolts are indispensable for maintaining the safety and efficiency of rail networks worldwide. Investing in ASTM A183-compliant fish bolts ensures long-term performance, reduced maintenance, and compliance with international safety standards. Whether for mainline railways, mining operations, or urban transit systems, high-quality fish bolts provide the reliability needed to keep modern rail infrastructure on track.
Company Video
Certificate
Factory photo
Exhibition Collection
Package
FAQ
Inquire Now
Note: Please leave your email address, our professionals will contact you as soon as possible!
Hebei Tianlong Fastener Co., Ltd
Contact: Sophia
Tel: +86 18630088852
Tel: +86 15631086868
E-mail: [email protected]
E-mail: [email protected]
Add: Tianlong Company, Yongnian District, Handan, Hebei, China
Request Quote