8-87589-5 is a double-row vertical header from the AMPMODU .025 [0.64] square interconnection system, designed for board-to-board connections. This header features a 0.100 inch [2.54 mm] centerline spacing and is available in Plating C configuration. The contact area measures 0.200 inch [5.08 mm] with a post diameter of 0.035±0.003 inch [0.89±0.08 mm], and it is designed for use with PC boards of 0.055 inch [1.40 mm] minimum thickness. These headers are commonly used in electronic interconnection applications requiring reliable signal transmission between circuit boards.