Growermetal’s R&D department has developed the Grower Tenkeep® safety washer family. Launched at this year’s Fastener Fair Stuttgart, the washers have two surfaces with knurls of different geometry, specifically designed in order to ensure maximum performance against loosening of the bolted joints – even in the presence of extreme vibrations and dynamic loads.(…)
via A new member of the safety washer family | Fastener + Fixing Technology.