640505-3 is a 24-circuit PC board vertical pin header designed for use with soft shell pin and socket connector systems. This header is configured for 0.120 inch (3.05 mm) board thickness and features tin plating for reliable electrical connections. The header has dimensions of 1.115 inches (28.32 mm) for dimension A and 0.180 inches (4.57 mm) for dimension B. It mates with socket housing part number 1-640525-0 and is UL94V-0 rated for flammability. This RoHS compliant component is ideal for applications requiring reliable board-to-wire connections in matrix-style configurations.