CID A-A-59789C covers the general requirements for a family of 5 piece wedge card holders for holding circuit card assemblies into their installed positions when used in heat sinking devices (cold plates, heat exchanger) or other applications. Card holders covered by this CID are intended to provide maximum contact between thermal paths on the circuit card assemblies to the heat sink surfaces, and to provide increased resistance to loosening due to shock and vibration. Requirements for specific card holders are covered in the individual CID specification sheets. Card holders covered by this CID are intended for commercial/industrial applications.