>> Search results for: 550A6491 NSN Search Results National Stock Number (NSN) Description 5355-01-522-5771, 5355015225771 KNOB 5355-21-904-4575 , 5355219044575 KNOB 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