The 21100142 is a Series 21 PCB Tainer designed for securing and grounding printed circuit boards within an assembly. It is constructed from beryllium copper per ASTM B-194, providing excellent spring properties for board retention and positive electrical grounding. The tainer features a low-profile design of 3.18 mm (0.125 in), a flared entry for easy board insertion, and can be mounted using standard screws, rivets, or eyelets. This component is ideal for various electronic module assemblies where reliable board mounting and electrical grounding are critical.