fastener installation apparatus , for installing fasteners such as blind rivets of the type which includes a washer - like member which is free to fall away from the installed fastener , is provided with temporary retaining means for temporarily retaining the washer - like member on the installation apparatus after installation of the fastener . the temporary retaining means comprises a pair of gripping faces which project forwardly from the reaction faces of a pair of members which are part of the nosepiece of the apparatus . the gripping faces close together automatically to grip the washer - like member as the installation apparatus installs a fastener , and draw apart again to release the washer - like member as the installation apparatus returns to be ready to receive a further fastener for installation .