Nord-Lock wedge-locking washers are made for use with 3/4 inch steel bolts and/or nuts. Each pack contains four glued pairs of washers. Applications for Nord-Lock steel washers include general steel applications. Nord-Lock washers utilize tension instead of friction in order to secure bolted joints exposed to severe vibration and dynamic loads. Nord-Lock steel washers promise the highest corrosion resistance on the market. Nord-Lock wedge-locking washers are used in industries such as: energy, robotics, medical, transportation, offshore, mining and quarrying, construction and bridge building, manufacturing and processing, ship building, forestry and agriculture, heavy vehicles, and military. OTC 4 Ton Fork Lift Jack