120527-1 is a 1.0mm free height (IEEE 1386) connector plug designed for board-to-board stacking applications. This connector is configured for 64 positions and provides a stacking height of 10 mm (0.394 inches) when paired with compatible receptacles, featuring improved locating posts that enable fast and accurate hand placement on the board. The alignment posts are designed with 0.041 inch (0.0016 inch) tolerance on Post 1 and 0.12 inch (0.0047 inch) tolerance on Post 2, promoting proper location across connector material and PCB hole tolerances. The connector supports maximum PCB hole tolerances of 0.015 inch (0.0006 inch) and 0.005 inch (0.0002 inch) respectively, ensuring reliable registration and reducing stresses on solder joints. This product is commonly used in high-density interconnect applications where precise alignment and reliable mating are critical requirements.