Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number BB 4001051 1 found under Dial Control by L3 Communications Corp. The National Stock Number assigned to this part is 5355016693518, and the Federal Supply Class is 5355 Knobs And Pointers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like BB 4001051 1.