What Quality Standards Apply to Railway Fastening Systems? A Quick Overview

1. Introduction

Railway fasteners look simple. A clip, a plate, a bolt. But behind each component is a set of technical standards that define how it should perform — clamping force, fatigue life, corrosion resistance, and more.

Different markets use different standards. A fastener that works for a European high-speed line may not meet North American heavy-haul requirements. Understanding these standards is essential for procurement, engineering, and quality assurance.

This article explains the main quality standards for railway fastening systems — what they cover, who uses them, and why they matter.

2. EN 13481 – The European Standard

EN 13481 is the primary European standard for railway fastening systems. It sets performance requirements for complete fastening systems, not just individual components. The standard applies to fastening systems that act on the rail foot and/or web, including both direct and indirect fastening systems.

The standard organizes fastening systems into categories based on maximum design axle load and minimum curve radius:

EN 13481 covers performance requirements including:

• Longitudinal rail restraint

• Torsional resistance

• Fatigue performance

• Electrical insulation where required

EN 13481 is used for type approval of complete fastening systems. In practice, this means the entire system — clip, pad, plate, and housing — must be tested together, not just individual parts.

3. UIC Standards – International Reference

The International Union of Railways (UIC) publishes standards widely adopted internationally. The UIC 864 series covers track materials.

In 2022, UIC published revised versions of the 864 series:

UIC standards typically specify:

• Material grades and properties

• Dimensional tolerances

• Testing and inspection methods