>> Search results for: HR640 NSN Search Results National Stock Number (NSN) Description 6650-01-227-8051, 6650012278051 MONOCHROMETER-SPECTROGRAPH 5331-00-291-7342 , 5331002917342 Cancelled -> Replaced by 5330008429874 5331-00-292-7565, 5331002927565 Cancelled -> Replaced by 5330002913265 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