Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number ES2028-05R08 found under Screw Machine by Drs Sustainment Systems Inc. The National Stock Number assigned to this part is 5305004552637, 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 ES2028-05R08.