European (EN) / International (ISO) "Fasteners" Standards for Construction

Fasteners for Construction 

[High-strength structural bolting assemblies for preloading]

EN 14399-1General requirements
EN 14399-2Suitability for preloading
EN 14399-3System HR - Hexagon bolt and nut assemblies
EN 14399-4System HV - Hexagon bolt and nut assemblies
EN 14399-5Plain washers
EN 14399-6Plain chamfered washers
EN 14399-7System HR – Countersunk head bolt and nut assemblies
EN 14399-8System HV - Hexagon fit bolt and nut assemblies
EN 14399-9System HR or HV - Direct tension indicators for bolt and nut assemblies
EN 14399-10System HRC - Bolt and nut assemblies with calibrated preload

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