Patent ID: 8591159
Filing Date: 2013-11-26
Classification: F16B

Abstract:
1. A screw comprising: an elongated shank having a plurality of threads over at least a portion of the shank, the threads terminating in a pointed tip at a first end of the shank, the tip and the threads being adapted to penetrate into a material; a head disposed at a second end of the shank, the head having an underside surrounding the shank for bearing against a surface of the material into which the screw is inserted; and wherein the underside is entirely planar except for at least one material-receiving pocket formed in the underside of the head, the at least one pocket being adapted to receive at least some of the material when the head of the screw bears against the surface of the material, wherein the at least one pocket is spaced apart from the shank and also spaced apart from a periphery of the head.