DS EN 14399-7:2008
DS EN 14399-7:2008 High-Strength Structural Bolting Assemblies For Preloading - Part 7: System Hr - Countersunk Head Bolt And Nut Assemblies Provides requirements for: - dimensions; - associated washer(s) according to EN 14399-5 or to EN 14399-6; - performance and suitability tests; - for assemblies with thread sizes M12 to M36 and bolt pr