To provide an insertion type installing part which is made not to be removed easily, even when a load is operated in particular, while providing a basic condition that it can be installed in a single operation, and the number of part items is suppressed small.

In this insertion type installing part, a connecting part 1a operated to insert; inserting projections which are projected as plural projecting lines integrally from one side of the connecting part 1a to the same one direction, and inserted to the opponent holes in an elastic deformation; and locking parts 1c formed projecting integrally to the outer diameter, at the tips of the inserting projections 1b, in order to engage with the deep end of the hole; are provided, and its tip parts 1d are formed in a taper form to allow to insert to the hole. In such an installing part 1, prescription means 2 and 3 to prescribe the elastic deformation of the inserting projections 1b including locking parts 1c less than a specific amount, are formed integrally.