Content with lubrication

08 February 2022
It is the requirement that the manufacturer of the EN 14399 assembly will supply them suitably lubricated. The lubrication can be applied either on the bolt thread (external) or the nut thread (internal). Andrews Fasteners, in a majority of cases, choose to apply lubrication on the internal thread of the nuts. Due to the method used to lubricate the nuts, typically they need to be immersed in lubricant in full. Depending on the type of process used, the appearance of the nuts can differ, especially on Hot Dip Galvanised (HDG) nuts.
Read more about The different appearance of lubricated nuts on EN 14399 assemblies

18 December 2015
According to standard requirements, during assembly, you should not use any additional lubrication apart from that originally supplied. BS EN 14399 standard is leaving a clause, that additional lubrication should be used if it is subject to supplier recommendation. Andrews Fasteners BS EN 14399 Assemblies are supplied to k-Class k0 and are offered pre-lubricated. We are supplying lubricated parts of the assembly. Lubricated parts are used where due to surface coating , maximum tension needs to be controlled to prevent seizure.
Read more about Should high-strength structural bolting assemblies for preloading be assembled with lubrication?