Bolt assembly

The utility model aims to provide a bolt assembly, which increases the working surface, well transmits the torsion of a tool into a bolt, and ensures that the bolt assembly is tightened according to the expected torsion. The bolt comprises a column body and a bolt head fixed to one end of the column body, and an inner hexagonal groove is formed in the bolt head. The column body is sequentially provided with a light column section and a stud section in the direction away from the bolt head, the diameter of the light column section is smaller than that of the stud section, the light column section is sequentially sleeved with a flat gasket and an elastic gasket, and the inner diameter of the flat gasket and the inner diameter of the elastic gasket are smaller than the diameter of the stud section. 本实用新型要解决的问题是提供一种螺栓组合件，增加工作面，很好的将工具的扭力传入螺栓内，保证螺栓组合件按照预期的扭力拧紧。其包括柱身和固定在柱身一端的螺栓头，所述螺栓头上设置有内六角凹槽；所述柱身沿着远离所述螺栓头的方向依次为光柱段和螺柱段，所述光柱段的直径小于所述螺柱段的直径，所述光柱段依次套设有平垫和弹垫，所述平垫和弹垫的内径小于所述螺柱段直径。