Abstract: A fastener for securing objects to a slat floor, having a self-centering and self-aligning capability. A first embodiment comprises a body formed of a durable material and having a top surface, a lower surface, at least one side surface, and a central hole extending between the top surface and the lower surface. A second embodiment comprises a body formed of a durable material and having a top surface, a lower surface, at least one side surface, and a central hole extending between the top surface and the lower surface, wherein the top surface of the body has a flat central surface and two sloping upper surfaces starting adjacent to the flat central surface and angling downward toward either end of the body, and a lower fastener component that is coaxial with the central hole.

Abstract: A mat for protecting a floor in an animal confinement pen. The mat is formed of a durable material which is corrosion and abrasion resistant, impact absorbing, and fluid impermeable, and has a plurality of protrusions disposed on an upper surface of the mat, with the plurality of protrusions being regularly spaced and functioning to provide traction to animals but without accumulating debris on the mat, and also having a plurality of grooves disposed on the upper surface of the mat, with the plurality of grooves being spaced regularly apart and extending between opposite edges of the mat, and having a beveled edge extending around a perimeter of the mat so that animals may not be able to chew on the mat.