Wurth Coding Keys for 5.0mm, 5.08 & 7.62mm Pitch WR-TBL Series Terminal Block ConnectorsCoding Keys for 5.0mm, 5.08 & 7.62mm pitch WR-TBL Series terminal block connectors made from red UL94-V0 PA66.Stock number 823-6320 is for use in the terminal block plugStock number 823-6323 is for use in the corresponding terminal block headerWurth 5.08mm Pitch Two Part Terminal Blocks