One of the most common problems that occur when tightening fasteners is ‘galling’. While galled fasteners will certainly not be loose, the related joint won’t be properly tensioned and can fail from fatigue when put under service loads. As a result, the equipment may be affected, with mating components being seized, stripped, twisted off or sheared. Here, Chris Herling, applications engineer at Optimas, looks at thread galling and how to reduce its occurrence on the assembly line.(…)
