Fastening devices

A releasable fastening device for supporting a member, such as a display panel, comprising body means which has seating means defined by first and second arm means each of which protrudes from the body means, said arm means being directed away from said body means towards one another and terminating spaced from one another thereby defining therebetween a gap in which said display panel can be received, said first arm means defining a lateral stop for said display panel and said second arm means being resiliently mounted on said body means whereby said second arm means can move towards and away from said body means so that when a display panel enters said gap said second arm means can engage said display panel and whereby said display panel can be released by resiliently urging said second arm means towards said body means so that the said second arm means is disengaged from said panel, said body means being of a generally channel-shaped cross section and including a pair of end portions and a center portion which extends between and integrally connects said end portions, said center portion being defined by a pair of substantially parallel striplike bridging portions which extend between the end portions and are disposed adjacent the opposite edges of said body means, said center portion having a space located between said bridging portions said first arm means being integrally connected to one of said end portions and projecting outwardly from said bridging portions said second arm means being integrally connected to the other of said end portions and projecting outwardly from said bridging portions, said first and second arm means projecting generally toward one another and being substantially aligned with the space between said bridging portions.