1-5111008-2 is a 64-position vertical pin header designed for ribbon cable interconnect solutions in board-to-board applications. This universal ejection style pin header features a 0.100 x 0.100 inch (2.54 x 2.54 mm) centerline pitch with 0.025 inch (0.64 mm) square posts at the mating end. Key dimensions include A: 3.960 inches (100.58 mm), B: 3.800 inches (96.52 mm), C: 3.560 inches (90.42 mm), D: 3.400 inches (86.36 mm), and E: 3.100 inches (78.74 mm). The connector is part of TE Connectivity's System 50 series and is RoHS compliant, making it suitable for applications requiring reliable board-to-board connections in electronic assemblies.