Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK20-S found under Extension Shelter by Alaska Structures Inc. The National Stock Number assigned to this part is 8340015424351, and the Federal Supply Class is 8340 Tents And Tarpaulins. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AK20-S.