A sanitary installation part (1) which has an installation housing (2) which can be inserted into a housing mount of a gas line or a liquid line is provided and has at least one latching element which projects into a latching position on the outer circumference of the housing and can be moved in a resiliently elastic manner from this latching position to a zero position. The installation part according to the invention provides that the at least one latching element is designed as a latching protuberance (5) which is beveled or rounded along its transverse edges oriented transversely to the insertion direction on both sides, and the at least one latching protuberance (5), in its zero position, can be can be resiliently fitted into the latching element mount, in which the latching protuberance (5) is incorporated in the outer circumference of the installation housing (2).