
High-strength structural bolting assemblies for preloading - Part 7: System HR - Countersunk head bolt and nut assemblies
出版:Comite Europeen de Normalisation

專家解讀視頻
This draft European Standard specifies, together with EN 14399 1 and EN 14399 2, the requirements for assemblies of high-strength structural countersunk bolts and nuts of system HR suitable for preloaded joints with thread sizes M12 to M36 and property classes 8.8/8 or 8.8/10 and 10.9/10.