Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K56F0011-2 found under Insert Screw Thread by Mcdonnell Douglas. The National Stock Number assigned to this part is 5325007931731, and the Federal Supply Class is 5325 Fastening Devices. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K56F0011-2.