Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK1639S-MC4SE0105A found under Cover Tent by Alaska Structures Inc. The National Stock Number assigned to this part is 8340015497304, 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 AK1639S-MC4SE0105A.