The TE Connectivity / AMP Brand part 1-640455-6 is an MTA-.100 HDR ASSY, POLARIZED, NOTCHED, .025 SQUARE connector. This connector is designed with polarization and notches for easy and secure mating. It features a square pin pitch of .025 inches, ensuring reliable and precise connections. With its high-quality construction, this connector is suitable for various industrial applications that require a durable and reliable interconnect solution.