Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number B540051178-1 found under Terminal Board by Singer Co The. The National Stock Number assigned to this part is 5940004858304, 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 B540051178-1.