Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number PL705 42 6 found under Circuit Breaker Box by L 3 Communications Essco Inc. The National Stock Number assigned to this part is 5925012633513, and the Federal Supply Class is 5925 Circuit Breakers. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like PL705 42 6.