Implementations of the present disclosure provide a snap fit rod and fastener system including one or more fasteners for securing one or more rods to secure a spine or other anatomical structure. The fasteners include a fixation shaft, a clamp and a connector. The fixation shaft (for example a pedicle screw) is configured to frictionally engage a bone (vertebra) or other workpiece. The clamp has a pressure responsive portion that defines an opening configured to receive a rod. The connector is configured to connect the clamp to the fixation shaft and exert pressure on the clamp to modify the opening and secure the rod. A bias mechanism, such as a washer spring may be included to urge against the pressure responsive portion and which can be overcome by pressure on the rod for the “snap fit” effect. For additional adjustability, the clamp may be pivotally mounted on the fixation shaft.
