Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 991 1529 found under Screw Machine by Cargotec Usa Inc. The National Stock Number assigned to this part is 5305012720660, 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 991 1529.