Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number AK6331UG found under Rivet Blind by Pop Fasteners. The National Stock Number assigned to this part is 5320015146591, and the Federal Supply Class is 5320 Rivets. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like AK6331UG.