Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AA-R-40 SZ2 found under Rack Wearing Apparel by General Services Administration Inc. The National Stock Number assigned to this part is 7195000046726, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AA-R-40 SZ2.