Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SF54139 found under Terminal Lug by Superior Fuse And Manufacturing Co Inc. The National Stock Number assigned to this part is 5940001808053, and the Federal Supply Class is 5940 Lugs Terminals And Terminal Strips. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SF54139.