The contacts are phosphor bronze with a gold GXT plating at 30.0 µin (0.76 µm) on the mating surface, rated for 5 A per circuit at 110 V. This is a board-to-board interconnect, typically used to mate with a matching receptacle or a female header on a second PCB.
The 6-position count on this single-row header is the decision point for a BOM line that needs exactly six circuits. The 0.100" (2.54 mm) pitch is the legacy standard for 0.025" square pins, so it fits the common Berg-compatible IDC socket and crimp housing families.