The invention relates to an external
threaded fastener with a pre-formed slot at the
tail end and capability of realizing riveting
assembly. The external
threaded fastener is arranged as a bolt, a screw or a stud. The external
threaded fastener is composed of a twistable head part and a rod part with threads, wherein the bottom of the
screw head is vertically connected with the top of the screw rod; a
cut-through type slot is formed in the bottom of the
tail end of the screw rod along the radial direction; a
cutting direction of the slot extends to the top from the bottom at the
tail end of the screw rod; at least one slot is formed; an indent
nest base is arranged on the central part at the bottom at the tail end of the screw rod; the center of the
nest base coincides with the center of the slot. When the external threaded
fastener is used, the external threaded
fastener is firstly assembled in a connector, and then a nut is screwed in and tightened, a sharp tool is used for resisting against the center of the
nest base, and the screw rod on the slot part expands along the radial direction under an effect of hammering, so that the function of limiting the nut to retreat from the space is achieved. During a detaching process, the tool is used for loosening the nut and gradually drawing back the nut. The external threaded
fastener has better anti-loosening and anti-falling property, is low in production and use cost, is detachable and reusable and is capable of re-twisting and maintaining the connecting pair.