Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK31-15PIECE6 found under Spring by 3M Company. The National Stock Number assigned to this part is 5360010209123, and the Federal Supply Class is 5360 Coil Flat Leaf And Wire Springs. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AK31-15PIECE6.