BS EN 14399-6:2015

What is BS EN 14399-6 - Plain chamfered washers about?  

Preloaded bolted assemblies are very sensitive to differences in manufacture and lubrication. Therefore, it is important that the bolting assemblies are supplied by one manufacturer who is always responsible for the functionality of the bolting assemblies. 

BS EN 14399-6 on structural bolting reflects the situation in Europe where two technical solutions exist to achieve the necessary ductility of bolt/nut/washer assemblies. These solutions consist of two different systems (HR and HV) of bolt/nut/washer assemblies. Both systems are well proven, and it is the responsibility of the experts using structural bolting whether they use the one or the other system. 

BS EN 14399-6 specifies, together with EN 14399-1 and EN 14399-2, hardened and tempered chamfered plain washers with chamfer intended for bolting assemblies with large series hexagon high strength structural bolts and nuts with thread sizes from M12 to M36 inclusive. 

Who is BS EN 14399-6 - Plain chamfered washers for? 

BS EN 14399-6 on plain chamfered washers is useful for: 

• Manufacturers of bolting assemblies and components 
• Inspection bodies for the inspection of components and bolting assemblies 
• Quality control personnel 
• Organizations that design, maintain bolting assemblies 
• Testing authorities 
• Design engineers 
• Research and development team 

Why should you use BS EN 14399-6 - Plain chamfered washers?  

With the mechanical properties of the components, also the functionality of the bolting assemblies requires that the specified preload can be achieved if the bolting assemblies are tightened with a suitable procedure. 

BS EN 14399-6 provides with you the specifications and dimensions requirements for plain chamfered washers and reference standards. Following the guidelines given in BS EN 14399-6 helps you to design effective plain chamfered washer assemblies. 

The performance of the high-strength structural bolting assemblies depends on the properties of their specific components. BS EN 14399-6 provides you with functional characteristics of the plain chamfered washer assembly. 

Following the guidelines provided in BS EN 14399-6 creates a standardized approach for you and you can deliver high-quality plain chamfered washers and related components to your customers. These customers will be able to safely use chamfered washer assemblies. 

What’s changed since the last update?  

BS EN 14399-6:2015 supersedes BS EN 14399-6:2005, which is withdrawn. BS EN 14399-6:2015 includes some technical changes with respect to BS EN 14399-6:2005. These include: 

• Containing the overview of the composition of bolting assemblies and component marking has been added 
• Specifications for the marking of washers have been revised