MIL, UL. Hirose 2.54mm HIF3B Series MIL Standard Shrouded PCB Header Connectors. HIF3B series 2.54mm shrouded PCB header connectors made from black UL94V-0 PBT with selective gold plated contacts. These HIF3B series shrouded PCB header connectors are MIL standard compliant (apart from stock number ; 608-1162 608-1162 ) with polarizing slots, polarizing key installs (for configuration details please see manufacturers datasheet) and ejection latches. Stock number ; 896-0824 896-0824 has a flux blister prevention feature.