Connecting hardware fitting for sectional composite insulator

The invention relates to a connecting hardware fitting for a sectional composite insulator, comprising two trough-type terminal hardware fittings having the same structure, and a connecting block, wherein each trough-type terminal hardware fitting comprises a sleeve structure with one opened end and a trough-type structure connected with the sleeve structure; a longitudinal connecting hole and a transverse connecting hole are respectively formed in the connecting block; a mounting hole in the trough-type structure of one trough-type terminal hardware fitting is connected with the longitudinal connecting hole of the connecting block through a fixed part, and the mounting hole in the trough-type structure of the other trough-type terminal hardware fitting is connected with the transverse connecting hole of the connecting block through a fixed part; and a pressure-equalizing shading ring is arranged on the sleeve structure of each trough-type terminal hardware fitting. The connecting hardware fitting solves the defect that the lengthy composite insulator is difficult to be carried to a construction field or can not be carried to the construction field; the connecting hardware fitting has the advantages of flexible freedom degree, safety and reliability, easy installation, cost conservation, and the like; and the connecting hardware fitting can be widely applicable to the connection of all sectional composite insulators, specifically the composite insulators under the condition of extra-high voltage or high voltage.