Abstract: A back plate assembly for home hardware is provided with a base and an attachment. The base includes at least one mount aperture and is adapted to be mounted to a support surface. The base defines a receptacle, a through-hole, a pair of grooves disposed at an outer edge of the through-hole, and a pair of ledges offset from an inner edge of the through-hole. The attachment includes a lock member with a pair of lock features and a connector member sized for insertion between the pair of ledges when the attachment is oriented in a first radial position. Each of the pair of lock features is positioned on the attachment for insertion within one of the grooves and the connector member is sized to rest upon the ledges when the connector member extends through the through-hole and the attachment is rotated to a second radial position.