Back shock attenuation fastening and compound tight device

The utility model relates to a back shock attenuation fastening and compound tight device belongs to car component assembly's technical field. Back shock attenuation fastening and compound tight device, including sleeve, first spanner and second spanner, the sleeve comprises the head of sleeve body and sleeve body upper end, be provided with the crimple structure between sleeve body and the head, and operation window has been seted up on the sleeve body, just this internal cavity that is of sleeve, first spanner cover is established the crimple is structural, the one end of second spanner is passed operation window sets up in the cavity. The fastening lower with compound tight installation cost, and do not receive the environmental impact when using, and can be applied to the small batch volume trial -production of the big line production of non - and the debugging of doing over again and reprocessing, can show and reduce production debugging cost to guarantee assembly quality. 本实用新型涉及种后减震紧固和复紧装置，属于汽车零件装配的技术领