Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BKA4 20 found under Terminal Board by Altech Corporation. The National Stock Number assigned to this part is 5940014524244, 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 BKA4 20.