>> Search results for: HSP275XX NSN Search Results National Stock Number (NSN) Description 4540-00-790-0222, 4540007900222 Cancelled -> Replaced by 6660009324699 6660-00-904-3888 , 6660009043888 HEATER,PULSE AMPLIFIER 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