Self-tapping screw matched with connecting box for use

Abstract

The utility model relates to the technical field of screws, in particular to a self-tapping screw used in cooperation with a connecting box. Comprising a screw body, a screw head and a rotating head. The screw head is fixed to the upper end of the screw body, a circular groove is formed in the screw head, and a cross-shaped groove a is formed in the screw head and located at the bottom end of the circular groove. The rotating head is movably arranged on the inner side of the circular groove, a cross-shaped groove b is formed in the rotating head, and a cross-shaped block matched with the cross-shaped groove a is arranged at the bottom end of the rotating head; a notch a and a notch b are formed in the side portion of the screw head, and an elastic clamping piece is arranged on the inner side of the circular groove. The end of a screwdriver bit can be inserted into the cross-shaped groove b and the cross-shaped groove a, and when the rotating head slips, the screw body can still be driven to rotate through the cross-shaped groove a, so that it is guaranteed that the screw body can be smoothly rotated and taken down.

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