Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 2191-P016984 found under Thumbscrew by Gkn Aerospace Services Ltd. The National Stock Number assigned to this part is 5305008328631, and the Federal Supply Class is 5305 Screws. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 2191-P016984.