>> Search results for: NAS1581A4T21 NSN Search Results National Stock Number (NSN) Description 5305-01-280-5766, 5305012805766 Cancelled -> Replaced by 5305014258824 5305-01-689-2043 , 5305016892043 SCREW,CLOSE TOLERANCE 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