BS EN 4173:2006

What is BS EN 4173 - Lockbolts for aerospace applications about? 

BS EN 4173 is a European Standard series that discusses components used in the aerospace industry. The purpose of BS EN 4173 is to provide the best industry design requirements for lockbolts to ensure resistance to loosening with vibration and prevent material fatigue. 

BS EN 4173 specifies the characteristics of lockbolts with 100° countersunk normal head, shear-type, close tolerance, in titanium alloy TI-P64001, anodized, metric series, for use in aerospace applications. 

BS EN 4173 specifies the classification of lockbolts with a minimum tensile strength class of 1100 MPa and maximum operating temperature of 315°C. 

In both versions, i.e. with and without pintail these lockbolts fulfil the same function when installed and are statically / dynamically equivalent. 

They are intended to be used with collars to EN 4174 or EN 4175. 

Who is BS EN 4173 - Lockbolts for aerospace applications for? 

BS EN 4173 on lockbolts for aerospace applications is useful for: 

• Manufacturers and suppliers of lockbolts for aerospace industry  
• Manufacturers of aerospace equipment and components 
• Dealers and importers of lockbolts 
• Quality assurance services  
• Product design engineers  
• Aeronautical engineers 
• Regulatory bodies 

Why should you use BS EN 4173 - Lockbolts for aerospace applications? 

Lockbolts are used to permanently join two materials. They're light and have the same strength as ordinary bolts. Wing splice fittings, landing gear fittings, fuel cell fittings, longerons, beams, skin splice plates, and other key structural connectors all require the lockbolt. When it comes to the manufacturing and use of aerospace components, reliability, consistent performance, and durability are crucial. 

BS EN 4173 guides you through dimensions and tolerances requirements, along with reference standards for materials and surface treatment, and designation requirements for lockbolts used in the aerospace industry. 

If you are a manufacturer of lockbolts used in the aerospace industry, compliance with these requirements can ensure your products meet the performance needs of the end-application.  

BS EN 4173 provides a standardized approach for manufacturers of lockbolts to adhere to if they supply their components for use by the aerospace and defence industry. 

With compliance to the best industry requirements specified in BS EN 4173, you can demonstrate the reliability, vibration resistance and durability of lockbolts for aerospace applications.