One kind of screw connection structure

The present invention provides a combination of a bolt, comprising a bolt and bushing inner having a first boss, said flange having an outer screw bolts, the first boss and the outer flange fitting so that the bolt can be moved within said sleeve, but not to come out, the bushing having an upper flange and a lower flange everted. The present invention further provides the above-described structure using a bolt connection bolt combination. The present invention can be a low cost automated assembly to meet the requirements of the screw bolt, to improve production efficiency.