The 640456-5 from TE Connectivity is a 2.54mm pitch, single row 5 position MTA-100 friction lock unshrouded header. It is a polarized, notched, .025 straight square post for use with MTA.100 connector assemblies. Current rating is 5A Operating temperature range from -55°C to 105°C Copper alloy with tin plated contacts Polyester GF housing UL, CSA approved Applications Industrial