Editing Electrical connector (section)

===Locking mechanisms===
Some connector housings are designed with locking mechanisms to prevent inadvertent disconnection or poor environmental sealing.<ref name="ieee" /> Locking mechanism designs include locking levers of various sorts, [[Jackscrews#In electronic connectors|jackscrew]]s, screw-in shells, [[push-pull connector]], and toggle or [[bayonet connector|bayonet]] systems.  Some connectors, particularly those with large numbers of contacts, require high forces to connect and disconnect.  Locking levers and jackscrews and screw-in shells for such connectors frequently serve both to retain the connector when connected and to provide the force needed for connection and disconnection.  Depending on application requirements, housings with locking mechanisms may be tested under various environmental simulations that include physical shock and vibration, water spray, dust, etc. to ensure the integrity of the electrical connection and housing seals.