Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number DD66-2011-127 found under Screw Shoulder by Cts Reeves Frequency Products. The National Stock Number assigned to this part is 5305008751436, 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 DD66-2011-127.