Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BK45K2 13NOP found under Switch Box by Janco Corporation. The National Stock Number assigned to this part is 5930012995343, and the Federal Supply Class is 5930 Switches. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BK45K2 13NOP.