>> Search results for: NAS1581A4T20 NSN Search Results National Stock Number (NSN) Description 5305-01-274-5657, 5305012745657 Cancelled -> Replaced by 5305014258823 5305-01-689-7703 , 5305016897703 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