an attachment device for attaching a substrate to a support structure includes a housing having a space defined by facing wall portions . the space captures a rotatable push nut with flexible teeth . the housing is attached to the substrate using a flange positioned opposite one of the wall portions , the substrate being crimped between the flange and the wall portion . the device may be pushed onto a threaded stud to rapidly affix the substrate to the support structure . the push nut may be rotated within the housing to disengage it from the stud and thereby remove the substrate from the support structure .