Patent ID: 8171826

Claim:
A fastener system comprising: a fastener having a head and a shank wherein the head is constructed having driver engageable surfaces and said driver engageable surfaces define multiple wings radially extending from a central core; a driver having an end constructed with mating surfaces for engagement with the driver engageable surfaces of the fastener head and said mating surfaces define multiple projections radially extending from a central core matching the wings; wherein each of said projections are constructed with a cross sectional shape comprising an installation surface, a tip portion and a removal surface that define the projection, and wherein each of the projections are connected by a transition surface extending between the installation and removal surfaces of adjacent projections; wherein the cross sectional shape comprises a projection having a width and a height and the ratio of the projection height to the projection width is approximately equal to or less than 0.5; and further wherein the driver engageable surfaces of the fastener head are constructed to receive the mating surfaces of the driver.