>> Search results for: AA52404 NSN Search Results National Stock Number (NSN) Description 5640-00-198-7255, 5640001987255 INSULATION BLOCK,THERMAL 5640-01-018-9889 , 5640010189889 INSULATION BOARD,THERMAL 5640-01-031-1262, 5640010311262 INSULATION BLOCK,THERMAL 5640-01-127-2217 , 5640011272217 INSULATION BOARD,THERMAL 1 Related Inventory Search You can use this search box to continue searching. Search parameters can include any combination of characteristics, specifications, description, partial part numbers, NSN or other stocking number. Special characters are not needed and are automatically stripped before searching. Do you sell this part? Become part of our growing pool of certified suppliers. Send Information