Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number K939020599 found under Bushing Sleeve by F E L Corp. The National Stock Number assigned to this part is 3120014532062, and the Federal Supply Class is 3120 Bearings Plain Unmounted. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like K939020599.